./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor241964149 <...> Warning: Permanently added '10.128.1.165' (ED25519) to the list of known hosts. execve("./syz-executor241964149", ["./syz-executor241964149"], 0x7fffc22c2c90 /* 10 vars */) = 0 brk(NULL) = 0x555556b47000 brk(0x555556b47d00) = 0x555556b47d00 arch_prctl(ARCH_SET_FS, 0x555556b47380) = 0 set_tid_address(0x555556b47650) = 5844 set_robust_list(0x555556b47660, 24) = 0 rseq(0x555556b47ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor241964149", 4096) = 27 getrandom("\x8e\x54\xcb\xad\x26\x9b\x16\xbe", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556b47d00 brk(0x555556b68d00) = 0x555556b68d00 brk(0x555556b69000) = 0x555556b69000 mprotect(0x7f7d4bde4000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 openat(AT_FDCWD, "/proc/self/make-it-fail", O_WRONLY) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_WRONLY) = 3 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5845 attached , child_tidptr=0x555556b47650) = 5845 [pid 5844] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] set_robust_list(0x555556b47660, 24) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5846 attached [pid 5844] <... clone resumed>, child_tidptr=0x555556b47650) = 5846 [pid 5844] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] set_robust_list(0x555556b47660, 24./strace-static-x86_64: Process 5847 attached ./strace-static-x86_64: Process 5848 attached ) = 0 [pid 5844] <... clone resumed>, child_tidptr=0x555556b47650) = 5848 [pid 5848] set_robust_list(0x555556b47660, 24 [pid 5844] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5847 [pid 5847] set_robust_list(0x555556b47660, 24 [pid 5848] <... set_robust_list resumed>) = 0 [pid 5847] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5849 attached ./strace-static-x86_64: Process 5850 attached [pid 5849] set_robust_list(0x555556b47660, 24 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5847] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5844] <... clone resumed>, child_tidptr=0x555556b47650) = 5849 [pid 5850] set_robust_list(0x555556b47660, 24 [pid 5849] <... set_robust_list resumed>) = 0 [pid 5847] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5851 attached [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5847] setpgid(0, 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5850 [pid 5844] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5851] set_robust_list(0x555556b47660, 24 [pid 5850] <... set_robust_list resumed>) = 0 [pid 5847] <... setpgid resumed>) = 0 [pid 5851] <... set_robust_list resumed>) = 0 [pid 5847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5853 attached ./strace-static-x86_64: Process 5852 attached ) = 0 [pid 5850] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5851 [pid 5847] <... openat resumed>) = 3 [pid 5844] <... clone resumed>, child_tidptr=0x555556b47650) = 5852 [pid 5853] set_robust_list(0x555556b47660, 24 [pid 5850] <... prctl resumed>) = 0 [pid 5852] set_robust_list(0x555556b47660, 24 [pid 5851] setpgid(0, 0 [pid 5853] <... set_robust_list resumed>) = 0 [pid 5850] setpgid(0, 0 [pid 5853] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] <... set_robust_list resumed>) = 0 [pid 5851] <... setpgid resumed>) = 0 [pid 5850] <... setpgid resumed>) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5853 [pid 5847] write(3, "1000", 4 [pid 5853] <... prctl resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5853] setpgid(0, 0 [pid 5847] <... write resumed>) = 4 [pid 5850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5854 attached [pid 5853] <... setpgid resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5854 [pid 5851] <... openat resumed>) = 3 [pid 5847] close(3 [pid 5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5851] write(3, "1000", 4 [pid 5850] <... openat resumed>) = 3 [pid 5847] <... close resumed>) = 0 executing program [pid 5854] set_robust_list(0x555556b47660, 24 [pid 5853] <... openat resumed>) = 3 [pid 5851] <... write resumed>) = 4 [pid 5847] write(1, "executing program\n", 18 [pid 5854] <... set_robust_list resumed>) = 0 [pid 5851] close(3 [pid 5854] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5853] write(3, "1000", 4 [pid 5850] write(3, "1000", 4 [pid 5847] <... write resumed>) = 18 [pid 5854] <... prctl resumed>) = 0 [pid 5850] <... write resumed>) = 4 [pid 5854] setpgid(0, 0 [pid 5853] <... write resumed>) = 4 [pid 5850] close(3 [pid 5847] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5854] <... setpgid resumed>) = 0 [pid 5853] close(3 [pid 5851] <... close resumed>) = 0 [pid 5850] <... close resumed>) = 0 executing program executing program [pid 5850] write(1, "executing program\n", 18 [pid 5854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5853] <... close resumed>) = 0 [pid 5851] write(1, "executing program\n", 18 [pid 5847] <... bpf resumed>) = 3 [pid 5853] write(1, "executing program\n", 18 [pid 5851] <... write resumed>) = 18 [pid 5853] <... write resumed>) = 18 executing program [pid 5854] <... openat resumed>) = 3 [pid 5853] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5851] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5850] <... write resumed>) = 18 [pid 5847] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5854] write(3, "1000", 4 [pid 5853] <... bpf resumed>) = 3 [pid 5850] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5847] <... bpf resumed>) = 4 [pid 5853] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5851] <... bpf resumed>) = 3 [pid 5854] <... write resumed>) = 4 [pid 5853] <... bpf resumed>) = 4 [pid 5850] <... bpf resumed>) = 3 [pid 5854] close(3 [pid 5851] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5847] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5854] <... close resumed>) = 0 [pid 5853] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5850] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5853] <... socket resumed>) = 5 [pid 5851] <... bpf resumed>) = 4 [pid 5847] <... socket resumed>) = 5 [pid 5854] write(1, "executing program\n", 18executing program [pid 5847] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5854] <... write resumed>) = 18 [pid 5853] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5851] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5850] <... bpf resumed>) = 4 [pid 5854] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5851] <... socket resumed>) = 5 [pid 5847] <... openat resumed>) = 6 [pid 5853] <... openat resumed>) = 6 [pid 5850] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5854] <... bpf resumed>) = 3 [pid 5853] write(6, "3", 1 [pid 5851] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5850] <... socket resumed>) = 5 [pid 5847] write(6, "3", 1 [pid 5854] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5853] <... write resumed>) = 1 [pid 5851] <... openat resumed>) = 6 [pid 5850] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5854] <... bpf resumed>) = 4 [pid 5853] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5851] write(6, "3", 1 [pid 5850] <... openat resumed>) = 6 [pid 5847] <... write resumed>) = 1 [pid 5854] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5853] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5851] <... write resumed>) = 1 [pid 5850] write(6, "3", 1 [pid 5854] <... socket resumed>) = 5 [pid 5853] exit_group(0 [pid 5847] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5853] <... exit_group resumed>) = ? [pid 5851] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5850] <... write resumed>) = 1 [pid 5847] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5854] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5851] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5850] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5847] exit_group(0 [pid 5854] <... openat resumed>) = 6 [pid 5851] exit_group(0 [pid 5850] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5847] <... exit_group resumed>) = ? [pid 5854] write(6, "3", 1 [pid 5853] +++ exited with 0 +++ [pid 5851] <... exit_group resumed>) = ? [pid 5850] exit_group(0 [pid 5854] <... write resumed>) = 1 [pid 5847] +++ exited with 0 +++ [pid 5854] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5850] <... exit_group resumed>) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5853, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5854] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5851] +++ exited with 0 +++ [pid 5854] exit_group(0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5847, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5855 attached [pid 5854] <... exit_group resumed>) = ? [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5851, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5856 attached [pid 5855] set_robust_list(0x555556b47660, 24 [pid 5850] +++ exited with 0 +++ ./strace-static-x86_64: Process 5857 attached [pid 5856] set_robust_list(0x555556b47660, 24 [pid 5855] <... set_robust_list resumed>) = 0 [pid 5856] <... set_robust_list resumed>) = 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5850, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5856 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5857 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5855 [pid 5855] setpgid(0, 0 [pid 5857] set_robust_list(0x555556b47660, 24 [pid 5856] <... prctl resumed>) = 0 [pid 5855] <... setpgid resumed>) = 0 [pid 5854] +++ exited with 0 +++ [pid 5857] <... set_robust_list resumed>) = 0 [pid 5856] setpgid(0, 0 [pid 5857] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5854, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5857] <... prctl resumed>) = 0 [pid 5856] <... setpgid resumed>) = 0 [pid 5857] setpgid(0, 0 [pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5857] <... setpgid resumed>) = 0 [pid 5857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5856] <... openat resumed>) = 3 [pid 5852] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 5858 attached [pid 5855] <... openat resumed>) = 3 [pid 5858] set_robust_list(0x555556b47660, 24 [pid 5855] write(3, "1000", 4 [pid 5858] <... set_robust_list resumed>) = 0 [pid 5855] <... write resumed>) = 4 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5858 [pid 5858] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5855] close(3) = 0 executing program [pid 5855] write(1, "executing program\n", 18 [pid 5858] <... prctl resumed>) = 0 [pid 5855] <... write resumed>) = 18 [pid 5858] setpgid(0, 0 [pid 5855] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5858] <... setpgid resumed>) = 0 [pid 5857] <... openat resumed>) = 3 [pid 5856] write(3, "1000", 4 [pid 5855] <... bpf resumed>) = 3 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5857] write(3, "1000", 4 [pid 5856] <... write resumed>) = 4 [pid 5857] <... write resumed>) = 4 [pid 5856] close(3 [pid 5857] close(3 [pid 5856] <... close resumed>) = 0 [pid 5857] <... close resumed>) = 0 [pid 5856] write(1, "executing program\n", 18executing program executing program [pid 5857] write(1, "executing program\n", 18 [pid 5856] <... write resumed>) = 18 [pid 5857] <... write resumed>) = 18 [pid 5858] <... openat resumed>) = 3 [pid 5856] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5857] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5858] write(3, "1000", 4 [pid 5855] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5859 attached [pid 5858] <... write resumed>) = 4 [pid 5857] <... bpf resumed>) = 3 [pid 5856] <... bpf resumed>) = 3 [pid 5858] close(3 [pid 5855] <... bpf resumed>) = 4 [pid 5858] <... close resumed>) = 0 [pid 5858] write(1, "executing program\n", 18executing program [pid 5855] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5858] <... write resumed>) = 18 [pid 5855] <... socket resumed>) = 5 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5859 [pid 5858] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5855] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5859] set_robust_list(0x555556b47660, 24 [pid 5858] <... bpf resumed>) = 3 [pid 5857] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5856] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5859] <... set_robust_list resumed>) = 0 [pid 5858] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5855] <... openat resumed>) = 6 [pid 5859] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5855] write(6, "3", 1 [pid 5859] <... prctl resumed>) = 0 [pid 5859] setpgid(0, 0 [pid 5855] <... write resumed>) = 1 [pid 5855] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5855] exit_group(0) = ? [pid 5859] <... setpgid resumed>) = 0 [pid 5858] <... bpf resumed>) = 4 [pid 5857] <... bpf resumed>) = 4 [pid 5856] <... bpf resumed>) = 4 [pid 5859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5858] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5859] <... openat resumed>) = 3 [pid 5857] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5856] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5859] write(3, "1000", 4 [pid 5857] <... socket resumed>) = 5 [pid 5859] <... write resumed>) = 4 [pid 5858] <... socket resumed>) = 5 [pid 5856] <... socket resumed>) = 5 [pid 5857] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5859] close(3 [pid 5858] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5856] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5859] <... close resumed>) = 0 [pid 5857] <... openat resumed>) = 6 executing program [pid 5859] write(1, "executing program\n", 18 [pid 5858] <... openat resumed>) = 6 [pid 5856] <... openat resumed>) = 6 [pid 5855] +++ exited with 0 +++ [pid 5859] <... write resumed>) = 18 [pid 5858] write(6, "3", 1 [pid 5857] write(6, "3", 1 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5855, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5859] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5858] <... write resumed>) = 1 [pid 5857] <... write resumed>) = 1 [pid 5856] write(6, "3", 1 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5858] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5857] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5856] <... write resumed>) = 1 [pid 5858] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5857] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5856] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5858] exit_group(0 [pid 5857] exit_group(0 [pid 5856] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5859] <... bpf resumed>) = 3 [pid 5858] <... exit_group resumed>) = ? [pid 5857] <... exit_group resumed>) = ? [pid 5856] exit_group(0 [pid 5859] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5859] <... bpf resumed>) = 4 [pid 5856] <... exit_group resumed>) = ? [pid 5859] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5859] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5856] +++ exited with 0 +++ [pid 5859] <... openat resumed>) = 6 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5856, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5859] write(6, "3", 1 [pid 5858] +++ exited with 0 +++ [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5859] <... write resumed>) = 1 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5858, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 5860 attached [pid 5859] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5857] +++ exited with 0 +++ [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5860] set_robust_list(0x555556b47660, 24 [pid 5859] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5857, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5860] <... set_robust_list resumed>) = 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5860 [pid 5860] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5859] exit_group(0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5860] <... prctl resumed>) = 0 [pid 5860] setpgid(0, 0) = 0 [pid 5860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5859] <... exit_group resumed>) = ? [pid 5860] <... openat resumed>) = 3 [pid 5859] +++ exited with 0 +++ [pid 5860] write(3, "1000", 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5859, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5860] <... write resumed>) = 4 [pid 5860] close(3executing program [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5860] <... close resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5860] write(1, "executing program\n", 18./strace-static-x86_64: Process 5862 attached ./strace-static-x86_64: Process 5861 attached ) = 18 [pid 5861] set_robust_list(0x555556b47660, 24 [pid 5860] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5861] <... set_robust_list resumed>) = 0 [pid 5861] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5864 attached ./strace-static-x86_64: Process 5863 attached [pid 5862] set_robust_list(0x555556b47660, 24 [pid 5861] <... prctl resumed>) = 0 [pid 5860] <... bpf resumed>) = 3 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5862 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5861 [pid 5862] <... set_robust_list resumed>) = 0 [pid 5864] set_robust_list(0x555556b47660, 24 [pid 5862] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5861] setpgid(0, 0 [pid 5862] <... prctl resumed>) = 0 [pid 5864] <... set_robust_list resumed>) = 0 [pid 5863] set_robust_list(0x555556b47660, 24 [pid 5861] <... setpgid resumed>) = 0 [pid 5864] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5862] setpgid(0, 0 [pid 5861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5863 [pid 5864] <... prctl resumed>) = 0 [pid 5864] setpgid(0, 0 [pid 5863] <... set_robust_list resumed>) = 0 [pid 5862] <... setpgid resumed>) = 0 [pid 5861] <... openat resumed>) = 3 [pid 5860] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5864 [pid 5864] <... setpgid resumed>) = 0 [pid 5863] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5861] write(3, "1000", 4 [pid 5864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5863] <... prctl resumed>) = 0 [pid 5864] <... openat resumed>) = 3 [pid 5863] setpgid(0, 0 [pid 5861] <... write resumed>) = 4 [pid 5860] <... bpf resumed>) = 4 [pid 5863] <... setpgid resumed>) = 0 [pid 5862] <... openat resumed>) = 3 [pid 5861] close(3 [pid 5864] write(3, "1000", 4 [pid 5861] <... close resumed>) = 0 [pid 5863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5864] <... write resumed>) = 4 [pid 5861] write(1, "executing program\n", 18executing program [pid 5864] close(3 [pid 5861] <... write resumed>) = 18 [pid 5860] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5864] <... close resumed>) = 0 [pid 5861] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5860] <... socket resumed>) = 5 [pid 5864] write(1, "executing program\n", 18executing program [pid 5863] <... openat resumed>) = 3 [pid 5862] write(3, "1000", 4 [pid 5864] <... write resumed>) = 18 [pid 5863] write(3, "1000", 4 executing program executing program [pid 5862] <... write resumed>) = 4 [pid 5861] <... bpf resumed>) = 3 [pid 5860] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5864] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5863] <... write resumed>) = 4 [pid 5862] close(3 [pid 5863] close(3 [pid 5862] <... close resumed>) = 0 [pid 5860] <... openat resumed>) = 6 [pid 5863] <... close resumed>) = 0 [pid 5862] write(1, "executing program\n", 18 [pid 5864] <... bpf resumed>) = 3 [pid 5863] write(1, "executing program\n", 18 [pid 5862] <... write resumed>) = 18 [pid 5860] write(6, "3", 1 [pid 5863] <... write resumed>) = 18 [pid 5862] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5864] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5861] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5860] <... write resumed>) = 1 [pid 5864] <... bpf resumed>) = 4 [pid 5863] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5861] <... bpf resumed>) = 4 [pid 5860] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5864] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5861] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5860] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5864] <... socket resumed>) = 5 [pid 5863] <... bpf resumed>) = 3 [pid 5861] <... socket resumed>) = 5 [pid 5860] exit_group(0 [pid 5864] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5862] <... bpf resumed>) = 3 [pid 5861] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5860] <... exit_group resumed>) = ? [pid 5864] <... openat resumed>) = 6 [pid 5863] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5862] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5861] <... openat resumed>) = 6 [pid 5863] <... bpf resumed>) = 4 [pid 5862] <... bpf resumed>) = 4 [pid 5863] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5862] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5864] write(6, "3", 1 [pid 5863] <... socket resumed>) = 5 [pid 5862] <... socket resumed>) = 5 [pid 5861] write(6, "3", 1 [pid 5860] +++ exited with 0 +++ [pid 5864] <... write resumed>) = 1 [pid 5863] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5862] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5861] <... write resumed>) = 1 [pid 5864] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5862] <... openat resumed>) = 6 [pid 5861] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5864] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5863] <... openat resumed>) = 6 [pid 5861] <... sendmsg resumed>) = 28 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5860, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5864] exit_group(0 [pid 5863] write(6, "3", 1 [pid 5862] write(6, "3", 1 [pid 5861] exit_group(0 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5864] <... exit_group resumed>) = ? [pid 5862] <... write resumed>) = 1 [pid 5861] <... exit_group resumed>) = ? [pid 5863] <... write resumed>) = 1 [pid 5862] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5863] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5863] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5863] exit_group(0 [pid 5862] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5861] +++ exited with 0 +++ [pid 5864] +++ exited with 0 +++ [pid 5862] exit_group(0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5861, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5863] <... exit_group resumed>) = ? [pid 5862] <... exit_group resumed>) = ? [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5864, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 5865 attached [pid 5863] +++ exited with 0 +++ [pid 5862] +++ exited with 0 +++ [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5863, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] <... restart_syscall resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5865 [pid 5865] set_robust_list(0x555556b47660, 24 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5862, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5865] <... set_robust_list resumed>) = 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5865] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] <... restart_syscall resumed>) = 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5865] <... prctl resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5865] setpgid(0, 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5865] <... setpgid resumed>) = 0 [pid 5865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5866 ./strace-static-x86_64: Process 5869 attached ./strace-static-x86_64: Process 5868 attached ./strace-static-x86_64: Process 5867 attached ./strace-static-x86_64: Process 5866 attached [pid 5865] write(3, "1000", 4 [pid 5868] set_robust_list(0x555556b47660, 24) = 0 [pid 5868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5869] set_robust_list(0x555556b47660, 24 [pid 5868] setpgid(0, 0 [pid 5869] <... set_robust_list resumed>) = 0 [pid 5868] <... setpgid resumed>) = 0 [pid 5869] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5867] set_robust_list(0x555556b47660, 24 [pid 5866] set_robust_list(0x555556b47660, 24 [pid 5865] <... write resumed>) = 4 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5869 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5867 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5868 [pid 5869] <... prctl resumed>) = 0 [pid 5868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5869] setpgid(0, 0 [pid 5868] <... openat resumed>) = 3 [pid 5867] <... set_robust_list resumed>) = 0 [pid 5866] <... set_robust_list resumed>) = 0 [pid 5865] close(3 [pid 5869] <... setpgid resumed>) = 0 [pid 5868] write(3, "1000", 4 [pid 5866] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5865] <... close resumed>) = 0 [pid 5868] <... write resumed>) = 4 [pid 5865] write(1, "executing program\n", 18 [pid 5869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5868] close(3 [pid 5866] <... prctl resumed>) = 0 [pid 5865] <... write resumed>) = 18 executing program [pid 5869] <... openat resumed>) = 3 [pid 5868] <... close resumed>) = 0 [pid 5867] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5866] setpgid(0, 0 [pid 5865] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5869] write(3, "1000", 4executing program [pid 5868] write(1, "executing program\n", 18 [pid 5867] <... prctl resumed>) = 0 [pid 5866] <... setpgid resumed>) = 0 [pid 5869] <... write resumed>) = 4 [pid 5868] <... write resumed>) = 18 [pid 5867] setpgid(0, 0 [pid 5869] close(3 [pid 5867] <... setpgid resumed>) = 0 [pid 5865] <... bpf resumed>) = 3 [pid 5869] <... close resumed>) = 0 executing program [pid 5868] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5869] write(1, "executing program\n", 18 [pid 5865] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5869] <... write resumed>) = 18 [pid 5867] <... openat resumed>) = 3 [pid 5869] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5866] <... openat resumed>) = 3 [pid 5869] <... bpf resumed>) = 3 [pid 5868] <... bpf resumed>) = 3 [pid 5867] write(3, "1000", 4 [pid 5866] write(3, "1000", 4 [pid 5865] <... bpf resumed>) = 4 [pid 5867] <... write resumed>) = 4 [pid 5867] close(3 [pid 5869] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24executing program [pid 5868] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5867] <... close resumed>) = 0 [pid 5866] <... write resumed>) = 4 [pid 5865] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5867] write(1, "executing program\n", 18) = 18 [pid 5867] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5869] <... bpf resumed>) = 4 [pid 5868] <... bpf resumed>) = 4 [pid 5866] close(3 [pid 5865] <... socket resumed>) = 5 [pid 5869] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5868] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5867] <... bpf resumed>) = 3 [pid 5866] <... close resumed>) = 0 [pid 5865] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5869] <... socket resumed>) = 5 [pid 5868] <... socket resumed>) = 5 [pid 5867] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5866] write(1, "executing program\n", 18 [pid 5865] <... openat resumed>) = 6 executing program [pid 5869] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5868] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5866] <... write resumed>) = 18 [pid 5865] write(6, "3", 1 [pid 5869] <... openat resumed>) = 6 [pid 5868] <... openat resumed>) = 6 [pid 5867] <... bpf resumed>) = 4 [pid 5866] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5869] write(6, "3", 1 [pid 5868] write(6, "3", 1 [pid 5867] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5865] <... write resumed>) = 1 [pid 5869] <... write resumed>) = 1 [pid 5868] <... write resumed>) = 1 [pid 5867] <... socket resumed>) = 5 [pid 5866] <... bpf resumed>) = 3 [pid 5865] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5869] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5868] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5867] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5866] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5869] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5868] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5867] <... openat resumed>) = 6 [pid 5866] <... bpf resumed>) = 4 [pid 5865] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5869] exit_group(0 [pid 5868] exit_group(0 [pid 5867] write(6, "3", 1 [pid 5866] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5865] exit_group(0 [pid 5869] <... exit_group resumed>) = ? [pid 5868] <... exit_group resumed>) = ? [pid 5866] <... socket resumed>) = 5 [pid 5865] <... exit_group resumed>) = ? [pid 5867] <... write resumed>) = 1 [pid 5866] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5869] +++ exited with 0 +++ [pid 5868] +++ exited with 0 +++ [pid 5867] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5866] <... openat resumed>) = 6 [pid 5867] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5866] write(6, "3", 1 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5869, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5868, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5867] exit_group(0 [pid 5866] <... write resumed>) = 1 [pid 5865] +++ exited with 0 +++ [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5867] <... exit_group resumed>) = ? [pid 5866] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5865, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5866] exit_group(0) = ? [pid 5867] +++ exited with 0 +++ [pid 5849] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5867, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5872 attached ./strace-static-x86_64: Process 5871 attached ./strace-static-x86_64: Process 5870 attached [pid 5866] +++ exited with 0 +++ [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5872] set_robust_list(0x555556b47660, 24 [pid 5870] set_robust_list(0x555556b47660, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5871 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5870 [pid 5872] <... set_robust_list resumed>) = 0 [pid 5872] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5871] set_robust_list(0x555556b47660, 24 [pid 5870] <... set_robust_list resumed>) = 0 [pid 5870] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5866, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5871] <... set_robust_list resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5872 [pid 5872] <... prctl resumed>) = 0 [pid 5870] <... prctl resumed>) = 0 [pid 5872] setpgid(0, 0 [pid 5871] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5870] setpgid(0, 0 [pid 5872] <... setpgid resumed>) = 0 [pid 5870] <... setpgid resumed>) = 0 [pid 5872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5871] <... prctl resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5871] setpgid(0, 0 [pid 5872] <... openat resumed>) = 3 [pid 5870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 5873 attached ./strace-static-x86_64: Process 5874 attached [pid 5872] write(3, "1000", 4 [pid 5871] <... setpgid resumed>) = 0 [pid 5873] set_robust_list(0x555556b47660, 24 [pid 5874] set_robust_list(0x555556b47660, 24 [pid 5872] <... write resumed>) = 4 [pid 5871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5870] write(3, "1000", 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5874 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5873 [pid 5873] <... set_robust_list resumed>) = 0 [pid 5874] <... set_robust_list resumed>) = 0 [pid 5872] close(3 [pid 5871] <... openat resumed>) = 3 [pid 5870] <... write resumed>) = 4 [pid 5870] close(3 [pid 5872] <... close resumed>) = 0 [pid 5870] <... close resumed>) = 0 [pid 5873] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5874] prctl(PR_SET_PDEATHSIG, SIGKILLexecuting program executing program [pid 5871] write(3, "1000", 4 [pid 5872] write(1, "executing program\n", 18 [pid 5871] <... write resumed>) = 4 [pid 5870] write(1, "executing program\n", 18 [pid 5873] <... prctl resumed>) = 0 [pid 5874] <... prctl resumed>) = 0 [pid 5872] <... write resumed>) = 18 [pid 5871] close(3 [pid 5870] <... write resumed>) = 18 [pid 5872] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5870] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5873] setpgid(0, 0 [pid 5874] setpgid(0, 0 [pid 5871] <... close resumed>) = 0 [pid 5873] <... setpgid resumed>) = 0 [pid 5874] <... setpgid resumed>) = 0 [pid 5871] write(1, "executing program\n", 18executing program [pid 5874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5872] <... bpf resumed>) = 3 [pid 5873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5874] <... openat resumed>) = 3 [pid 5871] <... write resumed>) = 18 [pid 5872] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5873] <... openat resumed>) = 3 [pid 5874] write(3, "1000", 4 [pid 5871] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5870] <... bpf resumed>) = 3 [pid 5873] write(3, "1000", 4 [pid 5874] <... write resumed>) = 4 [pid 5872] <... bpf resumed>) = 4 [pid 5870] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5873] <... write resumed>) = 4 [pid 5874] close(3 [pid 5871] <... bpf resumed>) = 3 [pid 5873] close(3 [pid 5874] <... close resumed>) = 0 [pid 5872] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5873] <... close resumed>) = 0 [pid 5874] write(1, "executing program\n", 18 [pid 5871] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5872] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5870] <... bpf resumed>) = 4 [pid 5873] write(1, "executing program\n", 18 executing program executing program [pid 5872] <... openat resumed>) = 6 [pid 5873] <... write resumed>) = 18 [pid 5874] <... write resumed>) = 18 [pid 5871] <... bpf resumed>) = 4 [pid 5870] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5872] write(6, "3", 1 [pid 5873] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5874] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5872] <... write resumed>) = 1 [pid 5872] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5871] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5870] <... socket resumed>) = 5 [pid 5872] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5872] exit_group(0 [pid 5873] <... bpf resumed>) = 3 [pid 5874] <... bpf resumed>) = 3 [pid 5872] <... exit_group resumed>) = ? [pid 5871] <... socket resumed>) = 5 [pid 5870] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5873] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5874] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5871] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5873] <... bpf resumed>) = 4 [pid 5874] <... bpf resumed>) = 4 [pid 5871] <... openat resumed>) = 6 [pid 5870] <... openat resumed>) = 6 [pid 5873] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5874] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5872] +++ exited with 0 +++ [pid 5871] write(6, "3", 1 [pid 5870] write(6, "3", 1 [pid 5873] <... socket resumed>) = 5 [pid 5874] <... socket resumed>) = 5 [pid 5871] <... write resumed>) = 1 [pid 5870] <... write resumed>) = 1 [pid 5874] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5871] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5870] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5873] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5874] <... openat resumed>) = 6 [pid 5871] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5870] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5872, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5873] <... openat resumed>) = 6 [pid 5871] exit_group(0 [pid 5870] exit_group(0 [pid 5873] write(6, "3", 1 [pid 5874] write(6, "3", 1 [pid 5871] <... exit_group resumed>) = ? [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5870] <... exit_group resumed>) = ? [pid 5873] <... write resumed>) = 1 [pid 5874] <... write resumed>) = 1 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5873] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5874] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5873] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5874] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5870] +++ exited with 0 +++ [pid 5873] exit_group(0 [pid 5874] exit_group(0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5870, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5873] <... exit_group resumed>) = ? [pid 5874] <... exit_group resumed>) = ? [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5871] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5871, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 5875 attached [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5875] set_robust_list(0x555556b47660, 24) = 0 [pid 5875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 5876 attached [pid 5875] setpgid(0, 0 [pid 5873] +++ exited with 0 +++ [pid 5874] +++ exited with 0 +++ [pid 5849] <... restart_syscall resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5876 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5875 [pid 5876] set_robust_list(0x555556b47660, 24 [pid 5875] <... setpgid resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5873, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5874, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5876] <... set_robust_list resumed>) = 0 [pid 5875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5876] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5875] <... openat resumed>) = 3 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5876] <... prctl resumed>) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5876] setpgid(0, 0 [pid 5875] write(3, "1000", 4) = 4 [pid 5876] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5877 attached [pid 5876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ./strace-static-x86_64: Process 5878 attached ) = 3 [pid 5875] close(3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5877 [pid 5875] <... close resumed>) = 0 [pid 5875] write(1, "executing program\n", 18) = 18 [pid 5875] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5878] set_robust_list(0x555556b47660, 24 [pid 5877] set_robust_list(0x555556b47660, 24 [pid 5876] write(3, "1000", 4 [pid 5878] <... set_robust_list resumed>) = 0 [pid 5877] <... set_robust_list resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5878 [pid 5877] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5876] <... write resumed>) = 4 [pid 5875] <... bpf resumed>) = 3 [pid 5876] close(3./strace-static-x86_64: Process 5879 attached ) = 0 [pid 5875] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5879] set_robust_list(0x555556b47660, 24) = 0 [pid 5878] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5877] <... prctl resumed>) = 0 [pid 5876] write(1, "executing program\n", 18 [pid 5875] <... bpf resumed>) = 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5879 [pid 5878] <... prctl resumed>) = 0 [pid 5877] setpgid(0, 0 [pid 5876] <... write resumed>) = 18 executing program [pid 5878] setpgid(0, 0 [pid 5877] <... setpgid resumed>) = 0 [pid 5879] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5875] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5879] <... prctl resumed>) = 0 [pid 5878] <... setpgid resumed>) = 0 [pid 5875] <... socket resumed>) = 5 [pid 5879] setpgid(0, 0 [pid 5875] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5879] <... setpgid resumed>) = 0 [pid 5879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5879] <... openat resumed>) = 3 [pid 5875] <... openat resumed>) = 6 [pid 5878] <... openat resumed>) = 3 [pid 5879] write(3, "1000", 4 [pid 5875] write(6, "3", 1 [pid 5879] <... write resumed>) = 4 [pid 5875] <... write resumed>) = 1 [pid 5879] close(3 [pid 5875] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5879] <... close resumed>) = 0 [pid 5875] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5879] write(1, "executing program\n", 18executing program ) = 18 [pid 5875] exit_group(0 [pid 5879] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5878] write(3, "1000", 4 [pid 5877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5878] <... write resumed>) = 4 [pid 5876] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5875] <... exit_group resumed>) = ? [pid 5879] <... bpf resumed>) = 3 [pid 5878] close(3 [pid 5876] <... bpf resumed>) = 3 [pid 5879] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5877] <... openat resumed>) = 3 [pid 5879] <... bpf resumed>) = 4 [pid 5879] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5878] <... close resumed>) = 0 [pid 5877] write(3, "1000", 4 [pid 5876] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5875] +++ exited with 0 +++ executing program [pid 5879] <... socket resumed>) = 5 [pid 5878] write(1, "executing program\n", 18 [pid 5877] <... write resumed>) = 4 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5875, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5879] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5878] <... write resumed>) = 18 [pid 5877] close(3 [pid 5879] <... openat resumed>) = 6 [pid 5878] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5879] write(6, "3", 1 [pid 5877] <... close resumed>) = 0 [pid 5876] <... bpf resumed>) = 4 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5879] <... write resumed>) = 1 [pid 5878] <... bpf resumed>) = 3 [pid 5877] write(1, "executing program\n", 18 [pid 5876] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 5880 attached [pid 5879] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0executing program [pid 5877] <... write resumed>) = 18 [pid 5880] set_robust_list(0x555556b47660, 24 [pid 5879] <... sendmsg resumed>) = 28 [pid 5880] <... set_robust_list resumed>) = 0 [pid 5879] exit_group(0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5880 [pid 5880] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5879] <... exit_group resumed>) = ? [pid 5878] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5877] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5876] <... socket resumed>) = 5 [pid 5880] <... prctl resumed>) = 0 [pid 5879] +++ exited with 0 +++ [pid 5878] <... bpf resumed>) = 4 [pid 5877] <... bpf resumed>) = 3 [pid 5876] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5880] setpgid(0, 0 [pid 5878] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5879, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5880] <... setpgid resumed>) = 0 [pid 5876] <... openat resumed>) = 6 [pid 5878] <... socket resumed>) = 5 [pid 5880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5877] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5878] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5876] write(6, "3", 1 [pid 5880] <... openat resumed>) = 3 [pid 5880] write(3, "1000", 4) = 4 [pid 5878] <... openat resumed>) = 6 [pid 5877] <... bpf resumed>) = 4 [pid 5876] <... write resumed>) = 1 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5880] close(3 [pid 5878] write(6, "3", 1 [pid 5877] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5876] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 5881 attached [pid 5880] <... close resumed>) = 0 [pid 5878] <... write resumed>) = 1 [pid 5877] <... socket resumed>) = 5 [pid 5876] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5881] set_robust_list(0x555556b47660, 24 [pid 5878] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5877] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5876] exit_group(0 [pid 5881] <... set_robust_list resumed>) = 0 [pid 5880] write(1, "executing program\n", 18executing program [pid 5878] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5877] <... openat resumed>) = 6 [pid 5876] <... exit_group resumed>) = ? [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5881 [pid 5881] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5880] <... write resumed>) = 18 [pid 5878] exit_group(0 [pid 5881] <... prctl resumed>) = 0 [pid 5880] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5881] setpgid(0, 0 [pid 5878] <... exit_group resumed>) = ? [pid 5877] write(6, "3", 1 [pid 5876] +++ exited with 0 +++ [pid 5881] <... setpgid resumed>) = 0 [pid 5880] <... bpf resumed>) = 3 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5876, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5877] <... write resumed>) = 1 [pid 5881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5877] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5846] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5881] <... openat resumed>) = 3 [pid 5877] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5881] write(3, "1000", 4 [pid 5880] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5877] exit_group(0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5881] <... write resumed>) = 4 [pid 5880] <... bpf resumed>) = 4 [pid 5878] +++ exited with 0 +++ [pid 5877] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5882 attached [pid 5881] close(3 [pid 5880] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5882] set_robust_list(0x555556b47660, 24 [pid 5881] <... close resumed>) = 0 [pid 5880] <... socket resumed>) = 5 executing program [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5882 [pid 5882] <... set_robust_list resumed>) = 0 [pid 5881] write(1, "executing program\n", 18 [pid 5880] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5882] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5881] <... write resumed>) = 18 [pid 5880] <... openat resumed>) = 6 [pid 5882] <... prctl resumed>) = 0 [pid 5881] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5880] write(6, "3", 1 [pid 5882] setpgid(0, 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5878, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5883 attached [pid 5882] <... setpgid resumed>) = 0 [pid 5880] <... write resumed>) = 1 [pid 5883] set_robust_list(0x555556b47660, 24 [pid 5882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5881] <... bpf resumed>) = 3 [pid 5880] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5877] +++ exited with 0 +++ [pid 5883] <... set_robust_list resumed>) = 0 [pid 5882] <... openat resumed>) = 3 [pid 5881] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5880] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5883 [pid 5880] exit_group(0) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5877, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5883] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5882] write(3, "1000", 4 [pid 5881] <... bpf resumed>) = 4 [pid 5849] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5882] <... write resumed>) = 4 [pid 5881] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5883] <... prctl resumed>) = 0 [pid 5882] close(3 [pid 5881] <... socket resumed>) = 5 [pid 5880] +++ exited with 0 +++ [pid 5882] <... close resumed>) = 0 [pid 5881] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWRexecuting program [pid 5882] write(1, "executing program\n", 18 [pid 5881] <... openat resumed>) = 6 [pid 5882] <... write resumed>) = 18 ./strace-static-x86_64: Process 5884 attached [pid 5882] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5881] write(6, "3", 1 [pid 5884] set_robust_list(0x555556b47660, 24 [pid 5883] setpgid(0, 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5880, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5884] <... set_robust_list resumed>) = 0 [pid 5883] <... setpgid resumed>) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5884 [pid 5884] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5882] <... bpf resumed>) = 3 [pid 5881] <... write resumed>) = 1 [pid 5884] <... prctl resumed>) = 0 [pid 5883] <... openat resumed>) = 3 [pid 5882] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5881] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5884] setpgid(0, 0 [pid 5883] write(3, "1000", 4 [pid 5881] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5884] <... setpgid resumed>) = 0 [pid 5883] <... write resumed>) = 4 [pid 5881] exit_group(0) = ? [pid 5884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5883] close(3 [pid 5882] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5885 attached [pid 5884] <... openat resumed>) = 3 [pid 5883] <... close resumed>) = 0 [pid 5885] set_robust_list(0x555556b47660, 24 [pid 5882] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5885] <... set_robust_list resumed>) = 0 [pid 5882] <... socket resumed>) = 5 [pid 5885] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5884] write(3, "1000", 4 [pid 5883] write(1, "executing program\n", 18executing program [pid 5882] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5881] +++ exited with 0 +++ [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5885 [pid 5885] <... prctl resumed>) = 0 [pid 5884] <... write resumed>) = 4 [pid 5883] <... write resumed>) = 18 [pid 5882] <... openat resumed>) = 6 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5881, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5885] setpgid(0, 0 [pid 5884] close(3 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5885] <... setpgid resumed>) = 0 [pid 5884] <... close resumed>) = 0 [pid 5882] write(6, "3", 1 [pid 5885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5883] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148executing program [pid 5882] <... write resumed>) = 1 [pid 5884] write(1, "executing program\n", 18 [pid 5885] <... openat resumed>) = 3 [pid 5884] <... write resumed>) = 18 [pid 5885] write(3, "1000", 4 [pid 5884] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5885] <... write resumed>) = 4 [pid 5883] <... bpf resumed>) = 3 [pid 5882] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5883] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5882] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5885] close(3 [pid 5884] <... bpf resumed>) = 3 [pid 5883] <... bpf resumed>) = 4 [pid 5882] exit_group(0 [pid 5885] <... close resumed>) = 0 [pid 5883] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5882] <... exit_group resumed>) = ? executing program [pid 5885] write(1, "executing program\n", 18 [pid 5884] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5883] <... socket resumed>) = 5 [pid 5885] <... write resumed>) = 18 [pid 5885] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5884] <... bpf resumed>) = 4 [pid 5883] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5882] +++ exited with 0 +++ [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5884] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5883] <... openat resumed>) = 6 [pid 5885] <... bpf resumed>) = 3 [pid 5884] <... socket resumed>) = 5 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5882, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 5886 attached [pid 5883] write(6, "3", 1 [pid 5886] set_robust_list(0x555556b47660, 24 [pid 5883] <... write resumed>) = 1 [pid 5886] <... set_robust_list resumed>) = 0 [pid 5883] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5886 [pid 5886] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5885] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5884] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5883] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5886] <... prctl resumed>) = 0 [pid 5885] <... bpf resumed>) = 4 [pid 5883] exit_group(0 [pid 5886] setpgid(0, 0 [pid 5885] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5884] <... openat resumed>) = 6 [pid 5883] <... exit_group resumed>) = ? [pid 5886] <... setpgid resumed>) = 0 [pid 5885] <... socket resumed>) = 5 [pid 5884] write(6, "3", 1 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5883] +++ exited with 0 +++ [pid 5886] write(3, "1000", 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5883, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5886] <... write resumed>) = 4 [pid 5852] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 5887 attached [pid 5886] close(3 [pid 5885] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5884] <... write resumed>) = 1 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5887] set_robust_list(0x555556b47660, 24 [pid 5886] <... close resumed>) = 0 [pid 5885] <... openat resumed>) = 6 [pid 5884] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5887] <... set_robust_list resumed>) = 0 [pid 5886] write(1, "executing program\n", 18executing program [pid 5887] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5886] <... write resumed>) = 18 [pid 5885] write(6, "3", 1 [pid 5884] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5887 ./strace-static-x86_64: Process 5888 attached [pid 5887] <... prctl resumed>) = 0 [pid 5886] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5885] <... write resumed>) = 1 [pid 5884] exit_group(0 [pid 5888] set_robust_list(0x555556b47660, 24 [pid 5887] setpgid(0, 0 [pid 5886] <... bpf resumed>) = 3 [pid 5885] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5884] <... exit_group resumed>) = ? [pid 5888] <... set_robust_list resumed>) = 0 [pid 5887] <... setpgid resumed>) = 0 [pid 5888] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5885] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5888 [pid 5888] <... prctl resumed>) = 0 [pid 5887] <... openat resumed>) = 3 [pid 5886] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5887] write(3, "1000", 4 [pid 5888] setpgid(0, 0 [pid 5885] exit_group(0 [pid 5888] <... setpgid resumed>) = 0 [pid 5885] <... exit_group resumed>) = ? [pid 5888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5887] <... write resumed>) = 4 [pid 5886] <... bpf resumed>) = 4 [pid 5884] +++ exited with 0 +++ [pid 5888] <... openat resumed>) = 3 [pid 5887] close(3 [pid 5886] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5884, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5888] write(3, "1000", 4 [pid 5887] <... close resumed>) = 0 [pid 5886] <... socket resumed>) = 5 [pid 5849] restart_syscall(<... resuming interrupted clone ...> executing program [pid 5887] write(1, "executing program\n", 18 [pid 5886] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5887] <... write resumed>) = 18 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5887] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5886] <... openat resumed>) = 6 [pid 5888] <... write resumed>) = 4 [pid 5885] +++ exited with 0 +++ [pid 5888] close(3) = 0 executing program [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5885, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5888] write(1, "executing program\n", 18 [pid 5886] write(6, "3", 1 [pid 5888] <... write resumed>) = 18 [pid 5887] <... bpf resumed>) = 3 [pid 5886] <... write resumed>) = 1 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5888] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 5890 attached ./strace-static-x86_64: Process 5889 attached [pid 5887] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5886] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5889] set_robust_list(0x555556b47660, 24 [pid 5887] <... bpf resumed>) = 4 [pid 5890] set_robust_list(0x555556b47660, 24 [pid 5889] <... set_robust_list resumed>) = 0 [pid 5888] <... bpf resumed>) = 3 [pid 5887] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5886] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5889 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5890 [pid 5890] <... set_robust_list resumed>) = 0 [pid 5889] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5888] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5887] <... socket resumed>) = 5 [pid 5886] exit_group(0 [pid 5890] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5889] <... prctl resumed>) = 0 [pid 5888] <... bpf resumed>) = 4 [pid 5887] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5886] <... exit_group resumed>) = ? [pid 5890] <... prctl resumed>) = 0 [pid 5889] setpgid(0, 0 [pid 5888] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5887] <... openat resumed>) = 6 [pid 5890] setpgid(0, 0 [pid 5889] <... setpgid resumed>) = 0 [pid 5888] <... socket resumed>) = 5 [pid 5886] +++ exited with 0 +++ [pid 5890] <... setpgid resumed>) = 0 [pid 5887] write(6, "3", 1) = 1 [pid 5888] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5886, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5888] <... openat resumed>) = 6 [pid 5887] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5889] <... openat resumed>) = 3 [pid 5889] write(3, "1000", 4) = 4 [pid 5889] close(3 [pid 5890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5888] write(6, "3", 1 [pid 5887] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] <... restart_syscall resumed>) = 0 executing program [pid 5890] <... openat resumed>) = 3 [pid 5889] <... close resumed>) = 0 [pid 5888] <... write resumed>) = 1 [pid 5887] exit_group(0 [pid 5890] write(3, "1000", 4 [pid 5889] write(1, "executing program\n", 18 [pid 5888] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5887] <... exit_group resumed>) = ? [pid 5890] <... write resumed>) = 4 [pid 5889] <... write resumed>) = 18 [pid 5888] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5890] close(3 [pid 5889] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5888] exit_group(0 [pid 5890] <... close resumed>) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5889] <... bpf resumed>) = 3 [pid 5888] <... exit_group resumed>) = ? [pid 5890] write(1, "executing program\n", 18./strace-static-x86_64: Process 5891 attached [pid 5891] set_robust_list(0x555556b47660, 24executing program ) = 0 [pid 5887] +++ exited with 0 +++ [pid 5891] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5890] <... write resumed>) = 18 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5891 [pid 5891] <... prctl resumed>) = 0 [pid 5891] setpgid(0, 0) = 0 [pid 5891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5890] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5889] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5888] +++ exited with 0 +++ [pid 5891] write(3, "1000", 4) = 4 [pid 5889] <... bpf resumed>) = 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5888, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5887, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5891] close(3) = 0 [pid 5891] write(1, "executing program\n", 18 [pid 5889] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5889] <... socket resumed>) = 5 [pid 5890] <... bpf resumed>) = 3 executing program [pid 5889] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] <... restart_syscall resumed>) = 0 [pid 5891] <... write resumed>) = 18 [pid 5889] <... openat resumed>) = 6 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5891] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5890] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 5892 attached [pid 5891] <... bpf resumed>) = 3 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5890] <... bpf resumed>) = 4 [pid 5889] write(6, "3", 1./strace-static-x86_64: Process 5893 attached [pid 5892] set_robust_list(0x555556b47660, 24) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5892 [pid 5893] set_robust_list(0x555556b47660, 24 [pid 5892] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5893] <... set_robust_list resumed>) = 0 [pid 5892] <... prctl resumed>) = 0 [pid 5889] <... write resumed>) = 1 [pid 5893] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5892] setpgid(0, 0 [pid 5891] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5890] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5893 [pid 5893] <... prctl resumed>) = 0 [pid 5892] <... setpgid resumed>) = 0 [pid 5891] <... bpf resumed>) = 4 [pid 5890] <... socket resumed>) = 5 [pid 5889] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5893] setpgid(0, 0 [pid 5892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5891] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5890] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5889] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5893] <... setpgid resumed>) = 0 [pid 5892] <... openat resumed>) = 3 [pid 5889] exit_group(0 [pid 5893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5892] write(3, "1000", 4 [pid 5891] <... socket resumed>) = 5 [pid 5890] <... openat resumed>) = 6 [pid 5889] <... exit_group resumed>) = ? [pid 5893] <... openat resumed>) = 3 [pid 5892] <... write resumed>) = 4 [pid 5893] write(3, "1000", 4) = 4 [pid 5892] close(3) = 0 [pid 5893] close(3) = 0 [pid 5892] write(1, "executing program\n", 18executing program executing program [pid 5893] write(1, "executing program\n", 18 [pid 5892] <... write resumed>) = 18 [pid 5893] <... write resumed>) = 18 [pid 5892] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5891] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5890] write(6, "3", 1 [pid 5889] +++ exited with 0 +++ [pid 5893] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5892] <... bpf resumed>) = 3 [pid 5891] <... openat resumed>) = 6 [pid 5890] <... write resumed>) = 1 [pid 5891] write(6, "3", 1 [pid 5890] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5889, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5891] <... write resumed>) = 1 [pid 5890] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5893] <... bpf resumed>) = 3 [pid 5891] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5890] exit_group(0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5891] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5890] <... exit_group resumed>) = ? [pid 5893] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5892] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5891] exit_group(0 [pid 5893] <... bpf resumed>) = 4 [pid 5892] <... bpf resumed>) = 4 [pid 5891] <... exit_group resumed>) = ? [pid 5893] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5892] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5893] <... socket resumed>) = 5 [pid 5892] <... socket resumed>) = 5 [pid 5890] +++ exited with 0 +++ [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5893] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5892] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5890, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5893] <... openat resumed>) = 6 [pid 5892] <... openat resumed>) = 6 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5893] write(6, "3", 1 [pid 5892] write(6, "3", 1 [pid 5891] +++ exited with 0 +++ [pid 5892] <... write resumed>) = 1 ./strace-static-x86_64: Process 5894 attached [pid 5893] <... write resumed>) = 1 [pid 5892] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5891, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5894] set_robust_list(0x555556b47660, 24 [pid 5893] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5892] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5894 [pid 5894] <... set_robust_list resumed>) = 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5892] exit_group(0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5893] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] <... restart_syscall resumed>) = 0 [pid 5894] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5893] exit_group(0 [pid 5892] <... exit_group resumed>) = ? [pid 5893] <... exit_group resumed>) = ? [pid 5894] <... prctl resumed>) = 0 [pid 5894] setpgid(0, 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5894] <... setpgid resumed>) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5895 attached [pid 5895] set_robust_list(0x555556b47660, 24./strace-static-x86_64: Process 5896 attached ) = 0 [pid 5894] <... openat resumed>) = 3 [pid 5893] +++ exited with 0 +++ [pid 5892] +++ exited with 0 +++ [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5895 [pid 5896] set_robust_list(0x555556b47660, 24 [pid 5895] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5894] write(3, "1000", 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5892, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5896 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5893, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5896] <... set_robust_list resumed>) = 0 [pid 5895] <... prctl resumed>) = 0 [pid 5894] <... write resumed>) = 4 [pid 5896] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5895] setpgid(0, 0 [pid 5894] close(3 [pid 5896] <... prctl resumed>) = 0 [pid 5895] <... setpgid resumed>) = 0 [pid 5894] <... close resumed>) = 0 [pid 5895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program [pid 5896] setpgid(0, 0 [pid 5894] write(1, "executing program\n", 18 [pid 5896] <... setpgid resumed>) = 0 [pid 5896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5894] <... write resumed>) = 18 [pid 5896] <... openat resumed>) = 3 [pid 5895] <... openat resumed>) = 3 [pid 5894] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5895] write(3, "1000", 4./strace-static-x86_64: Process 5898 attached ./strace-static-x86_64: Process 5897 attached [pid 5896] write(3, "1000", 4 [pid 5895] <... write resumed>) = 4 [pid 5894] <... bpf resumed>) = 3 [pid 5897] set_robust_list(0x555556b47660, 24 [pid 5896] <... write resumed>) = 4 [pid 5895] close(3 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5897 [pid 5897] <... set_robust_list resumed>) = 0 [pid 5896] close(3 [pid 5895] <... close resumed>) = 0 [pid 5898] set_robust_list(0x555556b47660, 24 [pid 5897] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5896] <... close resumed>) = 0 executing program executing program [pid 5895] write(1, "executing program\n", 18 [pid 5894] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5898 [pid 5898] <... set_robust_list resumed>) = 0 [pid 5896] write(1, "executing program\n", 18 [pid 5897] <... prctl resumed>) = 0 [pid 5896] <... write resumed>) = 18 [pid 5897] setpgid(0, 0 [pid 5896] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5898] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5895] <... write resumed>) = 18 [pid 5898] <... prctl resumed>) = 0 [pid 5897] <... setpgid resumed>) = 0 [pid 5896] <... bpf resumed>) = 3 [pid 5895] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5894] <... bpf resumed>) = 4 [pid 5898] setpgid(0, 0 [pid 5897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5896] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5898] <... setpgid resumed>) = 0 [pid 5897] <... openat resumed>) = 3 [pid 5896] <... bpf resumed>) = 4 [pid 5895] <... bpf resumed>) = 3 [pid 5897] write(3, "1000", 4 [pid 5898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5894] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5898] <... openat resumed>) = 3 [pid 5897] <... write resumed>) = 4 [pid 5896] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5895] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5898] write(3, "1000", 4 [pid 5896] <... socket resumed>) = 5 [pid 5894] <... socket resumed>) = 5 [pid 5898] <... write resumed>) = 4 [pid 5896] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5898] close(3) = 0 [pid 5894] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5895] <... bpf resumed>) = 4 [pid 5896] <... openat resumed>) = 6 [pid 5897] close(3executing program [pid 5894] <... openat resumed>) = 6 [pid 5897] <... close resumed>) = 0 [pid 5898] write(1, "executing program\n", 18 [pid 5897] write(1, "executing program\n", 18executing program [pid 5896] write(6, "3", 1 [pid 5895] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5898] <... write resumed>) = 18 [pid 5897] <... write resumed>) = 18 [pid 5894] write(6, "3", 1 [pid 5898] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5897] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5896] <... write resumed>) = 1 [pid 5895] <... socket resumed>) = 5 [pid 5897] <... bpf resumed>) = 3 [pid 5896] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5895] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5894] <... write resumed>) = 1 [pid 5896] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5895] <... openat resumed>) = 6 [pid 5894] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5898] <... bpf resumed>) = 3 [pid 5897] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5896] exit_group(0 [pid 5895] write(6, "3", 1 [pid 5894] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5898] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5897] <... bpf resumed>) = 4 [pid 5896] <... exit_group resumed>) = ? [pid 5895] <... write resumed>) = 1 [pid 5894] exit_group(0 [pid 5898] <... bpf resumed>) = 4 [pid 5897] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5898] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5897] <... socket resumed>) = 5 [pid 5898] <... socket resumed>) = 5 [pid 5897] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5898] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5897] <... openat resumed>) = 6 [pid 5895] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5894] <... exit_group resumed>) = ? [pid 5895] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5898] <... openat resumed>) = 6 [pid 5897] write(6, "3", 1 [pid 5896] +++ exited with 0 +++ [pid 5898] write(6, "3", 1 [pid 5897] <... write resumed>) = 1 [pid 5895] exit_group(0 [pid 5894] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5896, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5898] <... write resumed>) = 1 [pid 5897] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5895] <... exit_group resumed>) = ? [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5898] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5897] <... sendmsg resumed>) = 28 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5894, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5898] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5897] exit_group(0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5898] exit_group(0 [pid 5897] <... exit_group resumed>) = ? [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5898] <... exit_group resumed>) = ? [pid 5895] +++ exited with 0 +++ [pid 5849] <... restart_syscall resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5895, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5899 attached ./strace-static-x86_64: Process 5900 attached [pid 5899] set_robust_list(0x555556b47660, 24 [pid 5897] +++ exited with 0 +++ ./strace-static-x86_64: Process 5901 attached [pid 5901] set_robust_list(0x555556b47660, 24 [pid 5899] <... set_robust_list resumed>) = 0 [pid 5898] +++ exited with 0 +++ [pid 5900] set_robust_list(0x555556b47660, 24 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5897, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5901 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5899 [pid 5901] <... set_robust_list resumed>) = 0 [pid 5900] <... set_robust_list resumed>) = 0 [pid 5899] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5898, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5901] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5900] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5900 [pid 5901] <... prctl resumed>) = 0 [pid 5899] <... prctl resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5901] setpgid(0, 0 [pid 5899] setpgid(0, 0 [pid 5901] <... setpgid resumed>) = 0 [pid 5901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5900] <... prctl resumed>) = 0 [pid 5899] <... setpgid resumed>) = 0 [pid 5899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5901] <... openat resumed>) = 3 [pid 5900] setpgid(0, 0 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5900] <... setpgid resumed>) = 0 executing program [pid 5901] write(3, "1000", 4 [pid 5899] <... openat resumed>) = 3 [pid 5901] <... write resumed>) = 4 [pid 5900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5901] close(3 [pid 5899] write(3, "1000", 4 [pid 5901] <... close resumed>) = 0 [pid 5899] <... write resumed>) = 4 [pid 5901] write(1, "executing program\n", 18 [pid 5899] close(3 [pid 5901] <... write resumed>) = 18 [pid 5901] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5899] <... close resumed>) = 0 ./strace-static-x86_64: Process 5902 attached [pid 5900] <... openat resumed>) = 3 executing program [pid 5899] write(1, "executing program\n", 18 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5902 [pid 5902] set_robust_list(0x555556b47660, 24 [pid 5901] <... bpf resumed>) = 3 [pid 5900] write(3, "1000", 4 [pid 5899] <... write resumed>) = 18 [pid 5902] <... set_robust_list resumed>) = 0 [pid 5900] <... write resumed>) = 4 [pid 5899] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 5903 attached [pid 5901] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5900] close(3 [pid 5903] set_robust_list(0x555556b47660, 24 [pid 5902] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5900] <... close resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5903 executing program [pid 5903] <... set_robust_list resumed>) = 0 [pid 5900] write(1, "executing program\n", 18 [pid 5899] <... bpf resumed>) = 3 [pid 5902] <... prctl resumed>) = 0 [pid 5901] <... bpf resumed>) = 4 [pid 5900] <... write resumed>) = 18 [pid 5903] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5902] setpgid(0, 0 [pid 5901] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5900] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5899] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5903] <... prctl resumed>) = 0 [pid 5902] <... setpgid resumed>) = 0 [pid 5901] <... socket resumed>) = 5 [pid 5899] <... bpf resumed>) = 4 [pid 5902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5901] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5903] setpgid(0, 0 [pid 5900] <... bpf resumed>) = 3 [pid 5903] <... setpgid resumed>) = 0 [pid 5902] <... openat resumed>) = 3 [pid 5901] <... openat resumed>) = 6 [pid 5903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5899] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5902] write(3, "1000", 4 [pid 5901] write(6, "3", 1 [pid 5902] <... write resumed>) = 4 [pid 5901] <... write resumed>) = 1 [pid 5900] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5899] <... socket resumed>) = 5 [pid 5903] <... openat resumed>) = 3 [pid 5902] close(3 [pid 5901] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5903] write(3, "1000", 4 [pid 5902] <... close resumed>) = 0 [pid 5900] <... bpf resumed>) = 4 [pid 5899] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5902] write(1, "executing program\n", 18 [pid 5901] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5903] <... write resumed>) = 4 [pid 5900] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5899] <... openat resumed>) = 6 executing program [pid 5902] <... write resumed>) = 18 [pid 5901] exit_group(0 [pid 5899] write(6, "3", 1 [pid 5902] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5901] <... exit_group resumed>) = ? [pid 5899] <... write resumed>) = 1 [pid 5903] close(3 [pid 5900] <... socket resumed>) = 5 [pid 5903] <... close resumed>) = 0 [pid 5902] <... bpf resumed>) = 3 [pid 5900] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5899] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0executing program [pid 5903] write(1, "executing program\n", 18 [pid 5901] +++ exited with 0 +++ [pid 5900] <... openat resumed>) = 6 [pid 5903] <... write resumed>) = 18 [pid 5902] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5900] write(6, "3", 1 [pid 5899] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5901, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5903] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5902] <... bpf resumed>) = 4 [pid 5900] <... write resumed>) = 1 [pid 5899] exit_group(0 [pid 5903] <... bpf resumed>) = 3 [pid 5902] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5899] <... exit_group resumed>) = ? [pid 5903] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5902] <... socket resumed>) = 5 [pid 5900] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5903] <... bpf resumed>) = 4 [pid 5902] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5900] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5899] +++ exited with 0 +++ [pid 5903] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5902] <... openat resumed>) = 6 [pid 5900] exit_group(0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5899, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 5904 attached [pid 5903] <... socket resumed>) = 5 [pid 5900] <... exit_group resumed>) = ? [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5904] set_robust_list(0x555556b47660, 24 [pid 5903] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5902] write(6, "3", 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5904 [pid 5904] <... set_robust_list resumed>) = 0 [pid 5903] <... openat resumed>) = 6 [pid 5902] <... write resumed>) = 1 [pid 5904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5903] write(6, "3", 1 [pid 5902] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5904] setpgid(0, 0 [pid 5903] <... write resumed>) = 1 [pid 5902] <... sendmsg resumed>) = 28 [pid 5900] +++ exited with 0 +++ [pid 5904] <... setpgid resumed>) = 0 [pid 5903] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5902] exit_group(0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5900, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5903] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5902] <... exit_group resumed>) = ? [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5904] <... openat resumed>) = 3 [pid 5903] exit_group(0 [pid 5904] write(3, "1000", 4./strace-static-x86_64: Process 5905 attached [pid 5903] <... exit_group resumed>) = ? [pid 5902] +++ exited with 0 +++ [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5905] set_robust_list(0x555556b47660, 24 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5905 ./strace-static-x86_64: Process 5906 attached [pid 5905] <... set_robust_list resumed>) = 0 [pid 5904] <... write resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5902, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5905] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5904] close(3 [pid 5906] set_robust_list(0x555556b47660, 24 [pid 5905] <... prctl resumed>) = 0 [pid 5904] <... close resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5906 [pid 5906] <... set_robust_list resumed>) = 0 [pid 5905] setpgid(0, 0executing program ) = 0 [pid 5904] write(1, "executing program\n", 18 [pid 5903] +++ exited with 0 +++ [pid 5904] <... write resumed>) = 18 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5906] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5904] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 5907 attached [pid 5906] <... prctl resumed>) = 0 [pid 5905] <... openat resumed>) = 3 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5903, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5906] setpgid(0, 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5906] <... setpgid resumed>) = 0 [pid 5906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5905] write(3, "1000", 4 [pid 5904] <... bpf resumed>) = 3 [pid 5907] set_robust_list(0x555556b47660, 24) = 0 [pid 5905] <... write resumed>) = 4 [pid 5904] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5906] <... openat resumed>) = 3 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5907 [pid 5905] close(3 [pid 5906] write(3, "1000", 4 [pid 5905] <... close resumed>) = 0 [pid 5907] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5906] <... write resumed>) = 4 executing program [pid 5905] write(1, "executing program\n", 18 [pid 5907] <... prctl resumed>) = 0 [pid 5905] <... write resumed>) = 18 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5907] setpgid(0, 0 [pid 5906] close(3 [pid 5904] <... bpf resumed>) = 4 [pid 5907] <... setpgid resumed>) = 0 [pid 5907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5906] <... close resumed>) = 0 [pid 5906] write(1, "executing program\n", 18 [pid 5904] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERICexecuting program [pid 5906] <... write resumed>) = 18 [pid 5904] <... socket resumed>) = 5 [pid 5905] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5908 attached [pid 5907] <... openat resumed>) = 3 [pid 5906] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5904] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5908] set_robust_list(0x555556b47660, 24 [pid 5907] write(3, "1000", 4 [pid 5908] <... set_robust_list resumed>) = 0 [pid 5907] <... write resumed>) = 4 [pid 5908] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5907] close(3) = 0 [pid 5907] write(1, "executing program\n", 18executing program [pid 5905] <... bpf resumed>) = 3 [pid 5908] <... prctl resumed>) = 0 [pid 5907] <... write resumed>) = 18 [pid 5904] <... openat resumed>) = 6 [pid 5908] setpgid(0, 0 [pid 5907] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5906] <... bpf resumed>) = 3 [pid 5908] <... setpgid resumed>) = 0 [pid 5906] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5905] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5904] write(6, "3", 1 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5908 [pid 5908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5907] <... bpf resumed>) = 3 [pid 5906] <... bpf resumed>) = 4 [pid 5905] <... bpf resumed>) = 4 [pid 5904] <... write resumed>) = 1 [pid 5908] <... openat resumed>) = 3 [pid 5904] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5906] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5905] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5908] write(3, "1000", 4 [pid 5907] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5906] <... socket resumed>) = 5 [pid 5904] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5908] <... write resumed>) = 4 [pid 5907] <... bpf resumed>) = 4 [pid 5905] <... socket resumed>) = 5 [pid 5907] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5908] close(3 [pid 5907] <... socket resumed>) = 5 [pid 5906] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5905] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5904] exit_group(0 [pid 5908] <... close resumed>) = 0 [pid 5907] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5906] <... openat resumed>) = 6 [pid 5905] <... openat resumed>) = 6 [pid 5904] <... exit_group resumed>) = ? executing program [pid 5908] write(1, "executing program\n", 18 [pid 5907] <... openat resumed>) = 6 [pid 5906] write(6, "3", 1 [pid 5908] <... write resumed>) = 18 [pid 5907] write(6, "3", 1 [pid 5906] <... write resumed>) = 1 [pid 5905] write(6, "3", 1 [pid 5904] +++ exited with 0 +++ [pid 5908] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5907] <... write resumed>) = 1 [pid 5906] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5905] <... write resumed>) = 1 [pid 5907] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5906] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5905] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5904, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5907] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5906] exit_group(0 [pid 5905] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5908] <... bpf resumed>) = 3 [pid 5906] <... exit_group resumed>) = ? [pid 5905] exit_group(0 [pid 5908] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5907] exit_group(0 [pid 5908] <... bpf resumed>) = 4 [pid 5907] <... exit_group resumed>) = ? [pid 5905] <... exit_group resumed>) = ? [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5908] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5907] +++ exited with 0 +++ [pid 5906] +++ exited with 0 +++ [pid 5908] <... socket resumed>) = 5 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5907, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5908] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 5909 attached [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5909 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5906, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5908] <... openat resumed>) = 6 [pid 5909] set_robust_list(0x555556b47660, 24 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5910 attached [pid 5909] <... set_robust_list resumed>) = 0 [pid 5908] write(6, "3", 1 [pid 5905] +++ exited with 0 +++ [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5909] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5908] <... write resumed>) = 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5905, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5910] set_robust_list(0x555556b47660, 24 [pid 5909] <... prctl resumed>) = 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5910 [pid 5910] <... set_robust_list resumed>) = 0 [pid 5909] setpgid(0, 0 [pid 5908] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 5911 attached [pid 5910] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5909] <... setpgid resumed>) = 0 [pid 5908] <... sendmsg resumed>) = 28 [pid 5911] set_robust_list(0x555556b47660, 24 [pid 5910] <... prctl resumed>) = 0 [pid 5911] <... set_robust_list resumed>) = 0 [pid 5909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5908] exit_group(0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5911 [pid 5911] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5910] setpgid(0, 0 [pid 5908] <... exit_group resumed>) = ? [pid 5848] <... restart_syscall resumed>) = 0 [pid 5911] <... prctl resumed>) = 0 [pid 5910] <... setpgid resumed>) = 0 [pid 5909] <... openat resumed>) = 3 [pid 5911] setpgid(0, 0) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5909] write(3, "1000", 4 [pid 5910] <... openat resumed>) = 3 [pid 5909] <... write resumed>) = 4 [pid 5911] <... openat resumed>) = 3 [pid 5910] write(3, "1000", 4 [pid 5909] close(3 [pid 5908] +++ exited with 0 +++ [pid 5911] write(3, "1000", 4 [pid 5910] <... write resumed>) = 4 [pid 5909] <... close resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5912 ./strace-static-x86_64: Process 5912 attached [pid 5911] <... write resumed>) = 4 [pid 5910] close(3 executing program [pid 5909] write(1, "executing program\n", 18 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5908, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5912] set_robust_list(0x555556b47660, 24 [pid 5911] close(3 [pid 5910] <... close resumed>) = 0 [pid 5909] <... write resumed>) = 18 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5912] <... set_robust_list resumed>) = 0 [pid 5911] <... close resumed>) = 0 executing program [pid 5910] write(1, "executing program\n", 18 executing program [pid 5909] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5912] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5911] write(1, "executing program\n", 18 [pid 5910] <... write resumed>) = 18 [pid 5912] <... prctl resumed>) = 0 [pid 5912] setpgid(0, 0) = 0 [pid 5912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] <... restart_syscall resumed>) = 0 [pid 5911] <... write resumed>) = 18 [pid 5910] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5909] <... bpf resumed>) = 3 executing program [pid 5911] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5912] <... openat resumed>) = 3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5912] write(3, "1000", 4) = 4 ./strace-static-x86_64: Process 5913 attached [pid 5912] close(3 [pid 5910] <... bpf resumed>) = 3 [pid 5912] <... close resumed>) = 0 [pid 5912] write(1, "executing program\n", 18) = 18 [pid 5912] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5911] <... bpf resumed>) = 3 [pid 5913] set_robust_list(0x555556b47660, 24 [pid 5909] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5913 [pid 5913] <... set_robust_list resumed>) = 0 [pid 5912] <... bpf resumed>) = 3 [pid 5911] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5910] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5913] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5909] <... bpf resumed>) = 4 [pid 5913] <... prctl resumed>) = 0 [pid 5912] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5913] setpgid(0, 0 [pid 5912] <... bpf resumed>) = 4 [pid 5911] <... bpf resumed>) = 4 [pid 5910] <... bpf resumed>) = 4 [pid 5909] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5913] <... setpgid resumed>) = 0 [pid 5912] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5911] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5912] <... socket resumed>) = 5 [pid 5910] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5909] <... socket resumed>) = 5 [pid 5911] <... socket resumed>) = 5 [pid 5910] <... socket resumed>) = 5 [pid 5911] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5909] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5911] <... openat resumed>) = 6 [pid 5913] <... openat resumed>) = 3 [pid 5912] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5911] write(6, "3", 1 [pid 5909] <... openat resumed>) = 6 [pid 5913] write(3, "1000", 4 [pid 5912] <... openat resumed>) = 6 [pid 5911] <... write resumed>) = 1 [pid 5910] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5913] <... write resumed>) = 4 [pid 5912] write(6, "3", 1 [pid 5911] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5909] write(6, "3", 1 [pid 5913] close(3 [pid 5912] <... write resumed>) = 1 [pid 5911] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5910] <... openat resumed>) = 6 [pid 5909] <... write resumed>) = 1 [pid 5913] <... close resumed>) = 0 [pid 5912] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5911] exit_group(0 [pid 5910] write(6, "3", 1 [pid 5909] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5913] write(1, "executing program\n", 18 [pid 5912] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 5911] <... exit_group resumed>) = ? [pid 5910] <... write resumed>) = 1 [pid 5909] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5913] <... write resumed>) = 18 [pid 5912] exit_group(0 [pid 5910] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5909] exit_group(0 [pid 5913] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5912] <... exit_group resumed>) = ? [pid 5913] <... bpf resumed>) = 3 [pid 5910] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5909] <... exit_group resumed>) = ? [pid 5911] +++ exited with 0 +++ [pid 5910] exit_group(0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5911, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5910] <... exit_group resumed>) = ? [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5913] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 5914 attached ) = 4 [pid 5914] set_robust_list(0x555556b47660, 24 [pid 5913] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5912] +++ exited with 0 +++ [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5914 [pid 5913] <... socket resumed>) = 5 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5912, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5914] <... set_robust_list resumed>) = 0 [pid 5913] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5914] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5913] <... openat resumed>) = 6 [pid 5909] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5909, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5913] write(6, "3", 1 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5913] <... write resumed>) = 1 [pid 5913] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5914] <... prctl resumed>) = 0 [pid 5913] exit_group(0 [pid 5910] +++ exited with 0 +++ [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5914] setpgid(0, 0 [pid 5913] <... exit_group resumed>) = ? [pid 5914] <... setpgid resumed>) = 0 [pid 5914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5910, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5914] <... openat resumed>) = 3 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5914] write(3, "1000", 4) = 4 [pid 5914] close(3) = 0 ./strace-static-x86_64: Process 5915 attached [pid 5914] write(1, "executing program\n", 18executing program ) = 18 ./strace-static-x86_64: Process 5916 attached [pid 5914] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5916] set_robust_list(0x555556b47660, 24 [pid 5915] set_robust_list(0x555556b47660, 24 [pid 5914] <... bpf resumed>) = 3 [pid 5913] +++ exited with 0 +++ [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5916 [pid 5916] <... set_robust_list resumed>) = 0 [pid 5915] <... set_robust_list resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5913, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5915 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5916] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5915] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5914] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 5917 attached [pid 5916] <... prctl resumed>) = 0 [pid 5915] <... prctl resumed>) = 0 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5917] set_robust_list(0x555556b47660, 24 [pid 5916] setpgid(0, 0 [pid 5915] setpgid(0, 0 [pid 5917] <... set_robust_list resumed>) = 0 [pid 5916] <... setpgid resumed>) = 0 [pid 5915] <... setpgid resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5917 [pid 5917] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5918 attached [pid 5917] <... prctl resumed>) = 0 [pid 5916] <... openat resumed>) = 3 [pid 5915] <... openat resumed>) = 3 [pid 5914] <... bpf resumed>) = 4 [pid 5918] set_robust_list(0x555556b47660, 24 [pid 5917] setpgid(0, 0 [pid 5915] write(3, "1000", 4 [pid 5914] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5918] <... set_robust_list resumed>) = 0 [pid 5917] <... setpgid resumed>) = 0 [pid 5916] write(3, "1000", 4 [pid 5915] <... write resumed>) = 4 [pid 5914] <... socket resumed>) = 5 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5918 [pid 5918] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC executing program [pid 5916] <... write resumed>) = 4 [pid 5915] close(3 [pid 5914] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5917] <... openat resumed>) = 3 [pid 5915] <... close resumed>) = 0 [pid 5914] <... openat resumed>) = 6 [pid 5915] write(1, "executing program\n", 18 [pid 5917] write(3, "1000", 4 [pid 5916] close(3 [pid 5915] <... write resumed>) = 18 [pid 5914] write(6, "3", 1 [pid 5918] <... prctl resumed>) = 0 [pid 5918] setpgid(0, 0 [pid 5917] <... write resumed>) = 4 [pid 5916] <... close resumed>) = 0 [pid 5915] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 executing program [pid 5914] <... write resumed>) = 1 [pid 5918] <... setpgid resumed>) = 0 [pid 5917] close(3 [pid 5916] write(1, "executing program\n", 18 [pid 5914] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5917] <... close resumed>) = 0 [pid 5916] <... write resumed>) = 18 [pid 5916] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5917] write(1, "executing program\n", 18executing program [pid 5915] <... bpf resumed>) = 3 [pid 5914] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5918] <... openat resumed>) = 3 [pid 5917] <... write resumed>) = 18 [pid 5915] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5914] exit_group(0 [pid 5917] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5914] <... exit_group resumed>) = ? [pid 5918] write(3, "1000", 4 [pid 5917] <... bpf resumed>) = 3 [pid 5916] <... bpf resumed>) = 3 [pid 5915] <... bpf resumed>) = 4 [pid 5918] <... write resumed>) = 4 [pid 5917] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5918] close(3 [pid 5916] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5915] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5914] +++ exited with 0 +++ [pid 5918] <... close resumed>) = 0 [pid 5917] <... bpf resumed>) = 4 [pid 5916] <... bpf resumed>) = 4 [pid 5915] <... socket resumed>) = 5 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5914, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5918] write(1, "executing program\n", 18 [pid 5917] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5917] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWRexecuting program ) = 6 [pid 5918] <... write resumed>) = 18 [pid 5916] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5915] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5918] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5917] write(6, "3", 1 [pid 5916] <... socket resumed>) = 5 [pid 5915] <... openat resumed>) = 6 [pid 5917] <... write resumed>) = 1 [pid 5916] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5917] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5916] <... openat resumed>) = 6 [pid 5917] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5915] write(6, "3", 1 [pid 5918] <... bpf resumed>) = 3 [pid 5917] exit_group(0 [pid 5916] write(6, "3", 1 [pid 5915] <... write resumed>) = 1 [pid 5917] <... exit_group resumed>) = ? [pid 5916] <... write resumed>) = 1 [pid 5915] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5918] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5916] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5918] <... bpf resumed>) = 4 [pid 5917] +++ exited with 0 +++ [pid 5916] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5915] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5916] exit_group(0 [pid 5915] exit_group(0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5917, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5916] <... exit_group resumed>) = ? [pid 5915] <... exit_group resumed>) = ? [pid 5845] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 5919 attached [pid 5918] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5919] set_robust_list(0x555556b47660, 24 [pid 5918] <... socket resumed>) = 5 [pid 5919] <... set_robust_list resumed>) = 0 [pid 5918] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5919 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5919] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5918] <... openat resumed>) = 6 [pid 5916] +++ exited with 0 +++ [pid 5919] <... prctl resumed>) = 0 [pid 5918] write(6, "3", 1 [pid 5915] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5916, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5919] setpgid(0, 0 [pid 5918] <... write resumed>) = 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5915, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5919] <... setpgid resumed>) = 0 [pid 5918] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5918] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5918] exit_group(0./strace-static-x86_64: Process 5921 attached ./strace-static-x86_64: Process 5920 attached [pid 5919] <... openat resumed>) = 3 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5921] set_robust_list(0x555556b47660, 24 [pid 5920] set_robust_list(0x555556b47660, 24 [pid 5919] write(3, "1000", 4 [pid 5918] <... exit_group resumed>) = ? [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5920 [pid 5921] <... set_robust_list resumed>) = 0 [pid 5920] <... set_robust_list resumed>) = 0 [pid 5919] <... write resumed>) = 4 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5921 [pid 5921] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5920] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5919] close(3 [pid 5921] <... prctl resumed>) = 0 [pid 5920] <... prctl resumed>) = 0 [pid 5919] <... close resumed>) = 0 [pid 5921] setpgid(0, 0 [pid 5920] setpgid(0, 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5921] <... setpgid resumed>) = 0 [pid 5919] write(1, "executing program\n", 18executing program ./strace-static-x86_64: Process 5922 attached [pid 5920] <... setpgid resumed>) = 0 [pid 5921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5919] <... write resumed>) = 18 [pid 5922] set_robust_list(0x555556b47660, 24 [pid 5920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5922] <... set_robust_list resumed>) = 0 [pid 5922] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5920] <... openat resumed>) = 3 [pid 5919] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5922] <... prctl resumed>) = 0 [pid 5918] +++ exited with 0 +++ [pid 5922] setpgid(0, 0 [pid 5921] <... openat resumed>) = 3 [pid 5920] write(3, "1000", 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5918, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5922] <... setpgid resumed>) = 0 [pid 5921] write(3, "1000", 4 [pid 5920] <... write resumed>) = 4 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5922 [pid 5922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5921] <... write resumed>) = 4 [pid 5920] close(3executing program ) = 0 [pid 5920] write(1, "executing program\n", 18 [pid 5921] close(3 [pid 5920] <... write resumed>) = 18 [pid 5922] <... openat resumed>) = 3 [pid 5920] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5921] <... close resumed>) = 0 [pid 5922] write(3, "1000", 4 [pid 5921] write(1, "executing program\n", 18 [pid 5919] <... bpf resumed>) = 3 [pid 5922] <... write resumed>) = 4 [pid 5922] close(3 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5922] <... close resumed>) = 0 executing program [pid 5920] <... bpf resumed>) = 3 executing program [pid 5922] write(1, "executing program\n", 18 [pid 5921] <... write resumed>) = 18 [pid 5920] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5919] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5922] <... write resumed>) = 18 [pid 5921] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5922] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5919] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5923 attached [pid 5922] <... bpf resumed>) = 3 [pid 5921] <... bpf resumed>) = 3 [pid 5920] <... bpf resumed>) = 4 [pid 5919] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5923] set_robust_list(0x555556b47660, 24 [pid 5921] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5920] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5919] <... socket resumed>) = 5 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5923 [pid 5923] <... set_robust_list resumed>) = 0 [pid 5922] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5921] <... bpf resumed>) = 4 [pid 5920] <... socket resumed>) = 5 [pid 5919] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5923] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5922] <... bpf resumed>) = 4 [pid 5921] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5920] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5919] <... openat resumed>) = 6 [pid 5923] <... prctl resumed>) = 0 [pid 5922] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5921] <... socket resumed>) = 5 [pid 5923] setpgid(0, 0 [pid 5922] <... socket resumed>) = 5 [pid 5920] <... openat resumed>) = 6 [pid 5919] write(6, "3", 1 [pid 5923] <... setpgid resumed>) = 0 [pid 5922] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5921] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5919] <... write resumed>) = 1 [pid 5920] write(6, "3", 1 [pid 5923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5922] <... openat resumed>) = 6 [pid 5919] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5922] write(6, "3", 1 [pid 5921] <... openat resumed>) = 6 [pid 5920] <... write resumed>) = 1 [pid 5919] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5922] <... write resumed>) = 1 [pid 5919] exit_group(0 [pid 5923] <... openat resumed>) = 3 [pid 5922] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5921] write(6, "3", 1 [pid 5920] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5923] write(3, "1000", 4 [pid 5922] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5921] <... write resumed>) = 1 [pid 5920] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5919] <... exit_group resumed>) = ? [pid 5923] <... write resumed>) = 4 [pid 5922] exit_group(0 [pid 5921] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5920] exit_group(0 [pid 5922] <... exit_group resumed>) = ? [pid 5923] close(3 [pid 5921] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5920] <... exit_group resumed>) = ? [pid 5919] +++ exited with 0 +++ [pid 5923] <... close resumed>) = 0 [pid 5922] +++ exited with 0 +++ [pid 5923] write(1, "executing program\n", 18 executing program [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5922, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5921] exit_group(0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5919, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5923] <... write resumed>) = 18 [pid 5921] <... exit_group resumed>) = ? [pid 5923] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5846] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5923] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 5924 attached [pid 5924] set_robust_list(0x555556b47660, 24) = 0 [pid 5924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5924] setpgid(0, 0) = 0 [pid 5924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5923] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5921] +++ exited with 0 +++ [pid 5920] +++ exited with 0 +++ [pid 5924] <... openat resumed>) = 3 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5924 [pid 5924] write(3, "1000", 4 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5921, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5920, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5924] <... write resumed>) = 4 [pid 5924] close(3 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5924] <... close resumed>) = 0 [pid 5923] <... bpf resumed>) = 4 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5924] write(1, "executing program\n", 18) = 18 [pid 5923] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program ./strace-static-x86_64: Process 5925 attached [pid 5924] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5923] <... socket resumed>) = 5 ./strace-static-x86_64: Process 5926 attached ./strace-static-x86_64: Process 5927 attached [pid 5925] set_robust_list(0x555556b47660, 24) = 0 [pid 5924] <... bpf resumed>) = 3 [pid 5927] set_robust_list(0x555556b47660, 24 [pid 5926] set_robust_list(0x555556b47660, 24 [pid 5925] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5924] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5923] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5926 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5925 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5927 [pid 5927] <... set_robust_list resumed>) = 0 [pid 5925] <... prctl resumed>) = 0 [pid 5926] <... set_robust_list resumed>) = 0 [pid 5927] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5925] setpgid(0, 0 [pid 5927] <... prctl resumed>) = 0 [pid 5925] <... setpgid resumed>) = 0 [pid 5927] setpgid(0, 0 [pid 5925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5924] <... bpf resumed>) = 4 [pid 5923] <... openat resumed>) = 6 [pid 5927] <... setpgid resumed>) = 0 [pid 5926] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5925] <... openat resumed>) = 3 [pid 5927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5926] <... prctl resumed>) = 0 [pid 5924] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5923] write(6, "3", 1 [pid 5927] <... openat resumed>) = 3 [pid 5926] setpgid(0, 0 [pid 5925] write(3, "1000", 4 [pid 5924] <... socket resumed>) = 5 [pid 5923] <... write resumed>) = 1 [pid 5927] write(3, "1000", 4 [pid 5926] <... setpgid resumed>) = 0 executing program [pid 5925] <... write resumed>) = 4 [pid 5927] <... write resumed>) = 4 [pid 5926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5924] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5923] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5925] close(3) = 0 [pid 5925] write(1, "executing program\n", 18) = 18 [pid 5925] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5927] close(3 [pid 5926] <... openat resumed>) = 3 [pid 5924] <... openat resumed>) = 6 [pid 5923] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5927] <... close resumed>) = 0 [pid 5926] write(3, "1000", 4 [pid 5924] write(6, "3", 1 [pid 5923] exit_group(0 [pid 5927] write(1, "executing program\n", 18executing program [pid 5926] <... write resumed>) = 4 [pid 5925] <... bpf resumed>) = 3 [pid 5924] <... write resumed>) = 1 [pid 5923] <... exit_group resumed>) = ? [pid 5927] <... write resumed>) = 18 [pid 5926] close(3 [pid 5924] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5927] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5926] <... close resumed>) = 0 [pid 5925] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5924] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5926] write(1, "executing program\n", 18executing program [pid 5927] <... bpf resumed>) = 3 [pid 5926] <... write resumed>) = 18 [pid 5925] <... bpf resumed>) = 4 [pid 5924] exit_group(0 [pid 5925] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5923] +++ exited with 0 +++ [pid 5927] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5925] <... socket resumed>) = 5 [pid 5926] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5925] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5924] <... exit_group resumed>) = ? [pid 5927] <... bpf resumed>) = 4 [pid 5926] <... bpf resumed>) = 3 [pid 5925] <... openat resumed>) = 6 [pid 5927] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5925] write(6, "3", 1 [pid 5927] <... socket resumed>) = 5 [pid 5927] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5925] <... write resumed>) = 1 [pid 5924] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5923, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5926] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5927] write(6, "3", 1 [pid 5925] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5927] <... write resumed>) = 1 [pid 5926] <... bpf resumed>) = 4 [pid 5925] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5924, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5927] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5926] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5925] exit_group(0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5927] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5926] <... socket resumed>) = 5 [pid 5925] <... exit_group resumed>) = ? [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5929 attached ./strace-static-x86_64: Process 5928 attached [pid 5927] exit_group(0 [pid 5926] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5929] set_robust_list(0x555556b47660, 24 [pid 5928] set_robust_list(0x555556b47660, 24 [pid 5927] <... exit_group resumed>) = ? [pid 5926] <... openat resumed>) = 6 [pid 5925] +++ exited with 0 +++ [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5929 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5928 [pid 5929] <... set_robust_list resumed>) = 0 [pid 5928] <... set_robust_list resumed>) = 0 [pid 5929] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5928] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5926] write(6, "3", 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5925, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5929] <... prctl resumed>) = 0 [pid 5928] <... prctl resumed>) = 0 [pid 5926] <... write resumed>) = 1 [pid 5929] setpgid(0, 0 [pid 5928] setpgid(0, 0 [pid 5926] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5929] <... setpgid resumed>) = 0 [pid 5927] +++ exited with 0 +++ [pid 5926] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5928] <... setpgid resumed>) = 0 [pid 5928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5929] <... openat resumed>) = 3 [pid 5926] exit_group(0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5927, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5929] write(3, "1000", 4 [pid 5926] <... exit_group resumed>) = ? [pid 5848] <... restart_syscall resumed>) = 0 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5929] <... write resumed>) = 4 [pid 5928] <... openat resumed>) = 3 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5929] close(3 [pid 5928] write(3, "1000", 4 [pid 5929] <... close resumed>) = 0 executing program [pid 5929] write(1, "executing program\n", 18) = 18 [pid 5928] <... write resumed>) = 4 [pid 5926] +++ exited with 0 +++ [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5929] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 5930 attached [pid 5928] close(3 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5930] set_robust_list(0x555556b47660, 24executing program ./strace-static-x86_64: Process 5931 attached ) = 0 [pid 5928] <... close resumed>) = 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5926, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5930 [pid 5929] <... bpf resumed>) = 3 [pid 5928] write(1, "executing program\n", 18 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5931] set_robust_list(0x555556b47660, 24 [pid 5928] <... write resumed>) = 18 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5931] <... set_robust_list resumed>) = 0 [pid 5930] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5928] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5931] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5930] <... prctl resumed>) = 0 [pid 5928] <... bpf resumed>) = 3 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5931 [pid 5931] <... prctl resumed>) = 0 [pid 5930] setpgid(0, 0 [pid 5929] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5931] setpgid(0, 0 [pid 5930] <... setpgid resumed>) = 0 [pid 5929] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5932 attached [pid 5928] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5931] <... setpgid resumed>) = 0 [pid 5931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5932] set_robust_list(0x555556b47660, 24 [pid 5929] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5931] <... openat resumed>) = 3 [pid 5931] write(3, "1000", 4 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5932 [pid 5932] <... set_robust_list resumed>) = 0 [pid 5931] <... write resumed>) = 4 [pid 5929] <... socket resumed>) = 5 [pid 5928] <... bpf resumed>) = 4 [pid 5931] close(3 [pid 5932] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5931] <... close resumed>) = 0 executing program [pid 5929] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5928] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5931] write(1, "executing program\n", 18 [pid 5930] <... openat resumed>) = 3 [pid 5931] <... write resumed>) = 18 [pid 5929] <... openat resumed>) = 6 [pid 5928] <... socket resumed>) = 5 [pid 5932] <... prctl resumed>) = 0 [pid 5931] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5930] write(3, "1000", 4 [pid 5929] write(6, "3", 1 [pid 5928] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5932] setpgid(0, 0 [pid 5930] <... write resumed>) = 4 [pid 5929] <... write resumed>) = 1 [pid 5928] <... openat resumed>) = 6 [pid 5930] close(3 [pid 5929] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5930] <... close resumed>) = 0 [pid 5928] write(6, "3", 1 [pid 5930] write(1, "executing program\n", 18executing program ) = 18 [pid 5928] <... write resumed>) = 1 [pid 5932] <... setpgid resumed>) = 0 [pid 5930] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5929] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5928] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5931] <... bpf resumed>) = 3 [pid 5930] <... bpf resumed>) = 3 [pid 5929] exit_group(0 [pid 5932] <... openat resumed>) = 3 [pid 5928] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5932] write(3, "1000", 4 [pid 5929] <... exit_group resumed>) = ? [pid 5932] <... write resumed>) = 4 [pid 5931] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5930] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5928] exit_group(0 [pid 5932] close(3 [pid 5931] <... bpf resumed>) = 4 [pid 5930] <... bpf resumed>) = 4 [pid 5928] <... exit_group resumed>) = ? [pid 5932] <... close resumed>) = 0 [pid 5931] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5930] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5929] +++ exited with 0 +++ [pid 5931] <... socket resumed>) = 5 [pid 5931] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5930] <... socket resumed>) = 5 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5929, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5931] <... openat resumed>) = 6 [pid 5930] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5928] +++ exited with 0 +++ [pid 5932] write(1, "executing program\n", 18executing program [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5928, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5932] <... write resumed>) = 18 [pid 5931] write(6, "3", 1 [pid 5930] <... openat resumed>) = 6 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5932] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5931] <... write resumed>) = 1 [pid 5930] write(6, "3", 1 [pid 5931] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5930] <... write resumed>) = 1 [pid 5932] <... bpf resumed>) = 3 [pid 5931] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5930] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5932] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5931] exit_group(0 [pid 5930] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5932] <... bpf resumed>) = 4 [pid 5931] <... exit_group resumed>) = ? [pid 5930] exit_group(0 [pid 5932] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5930] <... exit_group resumed>) = ? [pid 5932] <... socket resumed>) = 5 [pid 5931] +++ exited with 0 +++ [pid 5932] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5932] <... openat resumed>) = 6 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5931, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 5933 attached [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5933] set_robust_list(0x555556b47660, 24 [pid 5932] write(6, "3", 1 [pid 5930] +++ exited with 0 +++ [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5933 [pid 5933] <... set_robust_list resumed>) = 0 [pid 5932] <... write resumed>) = 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5930, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5933] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5932] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5933] <... prctl resumed>) = 0 [pid 5932] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5933] setpgid(0, 0./strace-static-x86_64: Process 5934 attached [pid 5932] exit_group(0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5934 [pid 5934] set_robust_list(0x555556b47660, 24 [pid 5932] <... exit_group resumed>) = ? [pid 5934] <... set_robust_list resumed>) = 0 [pid 5933] <... setpgid resumed>) = 0 [pid 5934] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5848] <... restart_syscall resumed>) = 0 [pid 5934] <... prctl resumed>) = 0 [pid 5933] <... openat resumed>) = 3 [pid 5934] setpgid(0, 0) = 0 [pid 5934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5933] write(3, "1000", 4 [pid 5934] <... openat resumed>) = 3 [pid 5933] <... write resumed>) = 4 [pid 5932] +++ exited with 0 +++ [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5935 attached [pid 5934] write(3, "1000", 4 [pid 5933] close(3 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5932, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5934] <... write resumed>) = 4 [pid 5934] close(3 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5935 [pid 5935] set_robust_list(0x555556b47660, 24 [pid 5934] <... close resumed>) = 0 [pid 5933] <... close resumed>) = 0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5935] <... set_robust_list resumed>) = 0 executing program executing program [pid 5933] write(1, "executing program\n", 18 [pid 5934] write(1, "executing program\n", 18 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5935] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5934] <... write resumed>) = 18 [pid 5933] <... write resumed>) = 18 [pid 5935] <... prctl resumed>) = 0 [pid 5933] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5935] setpgid(0, 0./strace-static-x86_64: Process 5936 attached ) = 0 [pid 5934] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5933] <... bpf resumed>) = 3 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 5937 attached [pid 5936] set_robust_list(0x555556b47660, 24 [pid 5935] write(3, "1000", 4 [pid 5934] <... bpf resumed>) = 3 [pid 5933] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5936 [pid 5937] set_robust_list(0x555556b47660, 24 [pid 5936] <... set_robust_list resumed>) = 0 [pid 5935] <... write resumed>) = 4 [pid 5935] close(3 [pid 5934] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5937 [pid 5937] <... set_robust_list resumed>) = 0 [pid 5936] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5935] <... close resumed>) = 0 [pid 5934] <... bpf resumed>) = 4 [pid 5933] <... bpf resumed>) = 4 [pid 5934] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5937] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5936] <... prctl resumed>) = 0 [pid 5935] write(1, "executing program\n", 18executing program [pid 5933] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5937] <... prctl resumed>) = 0 [pid 5936] setpgid(0, 0 [pid 5935] <... write resumed>) = 18 [pid 5934] <... socket resumed>) = 5 [pid 5937] setpgid(0, 0 [pid 5936] <... setpgid resumed>) = 0 [pid 5934] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5933] <... socket resumed>) = 5 [pid 5937] <... setpgid resumed>) = 0 [pid 5936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5935] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5934] <... openat resumed>) = 6 [pid 5933] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5936] <... openat resumed>) = 3 [pid 5935] <... bpf resumed>) = 3 [pid 5934] write(6, "3", 1 [pid 5933] <... openat resumed>) = 6 [pid 5937] <... openat resumed>) = 3 [pid 5936] write(3, "1000", 4 [pid 5935] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5934] <... write resumed>) = 1 [pid 5933] write(6, "3", 1 [pid 5937] write(3, "1000", 4 [pid 5936] <... write resumed>) = 4 [pid 5934] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5933] <... write resumed>) = 1 [pid 5937] <... write resumed>) = 4 [pid 5936] close(3 [pid 5934] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5933] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5937] close(3 [pid 5936] <... close resumed>) = 0 [pid 5935] <... bpf resumed>) = 4 [pid 5934] exit_group(0 [pid 5933] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 5937] <... close resumed>) = 0 [pid 5936] write(1, "executing program\n", 18 [pid 5935] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5934] <... exit_group resumed>) = ? [pid 5933] exit_group(0executing program [pid 5937] write(1, "executing program\n", 18 [pid 5936] <... write resumed>) = 18 [pid 5935] <... socket resumed>) = 5 [pid 5933] <... exit_group resumed>) = ? [pid 5937] <... write resumed>) = 18 [pid 5936] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5935] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5934] +++ exited with 0 +++ [pid 5935] <... openat resumed>) = 6 [pid 5937] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5935] write(6, "3", 1 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5934, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5935] <... write resumed>) = 1 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5935] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5935] exit_group(0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5935] <... exit_group resumed>) = ? [pid 5936] <... bpf resumed>) = 3 [pid 5937] <... bpf resumed>) = 3 [pid 5936] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5935] +++ exited with 0 +++ [pid 5933] +++ exited with 0 +++ [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5937] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5933, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5935, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5937] <... bpf resumed>) = 4 [pid 5936] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 5938 attached [pid 5937] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5936] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5938] set_robust_list(0x555556b47660, 24 [pid 5937] <... socket resumed>) = 5 [pid 5936] <... socket resumed>) = 5 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5938] <... set_robust_list resumed>) = 0 [pid 5937] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5936] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5938 ./strace-static-x86_64: Process 5939 attached [pid 5938] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5937] <... openat resumed>) = 6 [pid 5936] <... openat resumed>) = 6 [pid 5939] set_robust_list(0x555556b47660, 24 [pid 5936] write(6, "3", 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5939 ./strace-static-x86_64: Process 5940 attached [pid 5939] <... set_robust_list resumed>) = 0 [pid 5936] <... write resumed>) = 1 [pid 5940] set_robust_list(0x555556b47660, 24 [pid 5939] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5938] <... prctl resumed>) = 0 [pid 5937] write(6, "3", 1 [pid 5936] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5940] <... set_robust_list resumed>) = 0 [pid 5939] <... prctl resumed>) = 0 [pid 5936] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5940] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5939] setpgid(0, 0 [pid 5936] exit_group(0 [pid 5940] <... prctl resumed>) = 0 [pid 5939] <... setpgid resumed>) = 0 [pid 5940] setpgid(0, 0 [pid 5939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5936] <... exit_group resumed>) = ? [pid 5940] <... setpgid resumed>) = 0 [pid 5938] setpgid(0, 0 [pid 5937] <... write resumed>) = 1 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5940 [pid 5938] <... setpgid resumed>) = 0 [pid 5937] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5939] <... openat resumed>) = 3 [pid 5938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5937] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5940] <... openat resumed>) = 3 [pid 5939] write(3, "1000", 4 [pid 5938] <... openat resumed>) = 3 [pid 5937] exit_group(0 [pid 5940] write(3, "1000", 4 [pid 5939] <... write resumed>) = 4 [pid 5938] write(3, "1000", 4 [pid 5936] +++ exited with 0 +++ [pid 5940] <... write resumed>) = 4 [pid 5939] close(3 [pid 5938] <... write resumed>) = 4 [pid 5937] <... exit_group resumed>) = ? executing program [pid 5940] close(3 [pid 5939] <... close resumed>) = 0 [pid 5939] write(1, "executing program\n", 18) = 18 [pid 5939] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5936, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5940] <... close resumed>) = 0 [pid 5939] <... bpf resumed>) = 3 [pid 5938] close(3 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5940] write(1, "executing program\n", 18 [pid 5938] <... close resumed>) = 0 executing program executing program [pid 5940] <... write resumed>) = 18 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5938] write(1, "executing program\n", 18 [pid 5940] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5938] <... write resumed>) = 18 [pid 5939] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5940] <... bpf resumed>) = 3 [pid 5937] +++ exited with 0 +++ [pid 5940] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5939] <... bpf resumed>) = 4 [pid 5938] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5940] <... bpf resumed>) = 4 [pid 5939] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5937, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5939] <... socket resumed>) = 5 [pid 5939] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 5941 attached ) = 6 [pid 5938] <... bpf resumed>) = 3 [pid 5941] set_robust_list(0x555556b47660, 24 [pid 5940] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5939] write(6, "3", 1 [pid 5938] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5941 [pid 5941] <... set_robust_list resumed>) = 0 [pid 5940] <... socket resumed>) = 5 [pid 5939] <... write resumed>) = 1 [pid 5938] <... bpf resumed>) = 4 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5941] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5940] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5939] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5938] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 5942 attached [pid 5941] <... prctl resumed>) = 0 [pid 5940] <... openat resumed>) = 6 [pid 5939] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5938] <... socket resumed>) = 5 [pid 5942] set_robust_list(0x555556b47660, 24 [pid 5941] setpgid(0, 0 [pid 5939] exit_group(0 [pid 5942] <... set_robust_list resumed>) = 0 [pid 5941] <... setpgid resumed>) = 0 [pid 5940] write(6, "3", 1 [pid 5939] <... exit_group resumed>) = ? [pid 5938] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5942 [pid 5942] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5940] <... write resumed>) = 1 [pid 5938] <... openat resumed>) = 6 [pid 5940] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5938] write(6, "3", 1 [pid 5940] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5938] <... write resumed>) = 1 [pid 5942] <... prctl resumed>) = 0 [pid 5940] exit_group(0 [pid 5938] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5942] setpgid(0, 0 [pid 5941] <... openat resumed>) = 3 [pid 5940] <... exit_group resumed>) = ? [pid 5938] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5942] <... setpgid resumed>) = 0 [pid 5941] write(3, "1000", 4 [pid 5939] +++ exited with 0 +++ [pid 5942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5941] <... write resumed>) = 4 [pid 5938] exit_group(0 [pid 5942] <... openat resumed>) = 3 [pid 5941] close(3 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5939, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5942] write(3, "1000", 4 [pid 5941] <... close resumed>) = 0 [pid 5938] <... exit_group resumed>) = ? executing program [pid 5942] <... write resumed>) = 4 [pid 5941] write(1, "executing program\n", 18) = 18 [pid 5941] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5942] close(3 [pid 5940] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5940, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program ./strace-static-x86_64: Process 5943 attached [pid 5942] <... close resumed>) = 0 [pid 5942] write(1, "executing program\n", 18) = 18 [pid 5938] +++ exited with 0 +++ [pid 5943] set_robust_list(0x555556b47660, 24 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5943] <... set_robust_list resumed>) = 0 [pid 5942] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5941] <... bpf resumed>) = 3 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5943 [pid 5943] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5941] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5943] <... prctl resumed>) = 0 [pid 5943] setpgid(0, 0 [pid 5941] <... bpf resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5938, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5942] <... bpf resumed>) = 3 [pid 5943] <... setpgid resumed>) = 0 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5942] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5941] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5846] <... restart_syscall resumed>) = 0 [pid 5943] <... openat resumed>) = 3 [pid 5942] <... bpf resumed>) = 4 [pid 5941] <... socket resumed>) = 5 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5943] write(3, "1000", 4 [pid 5942] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5941] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5943] <... write resumed>) = 4 [pid 5942] <... socket resumed>) = 5 [pid 5941] <... openat resumed>) = 6 [pid 5943] close(3 [pid 5942] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5941] write(6, "3", 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5943] <... close resumed>) = 0 [pid 5942] <... openat resumed>) = 6 executing program [pid 5943] write(1, "executing program\n", 18 [pid 5942] write(6, "3", 1 [pid 5941] <... write resumed>) = 1 ./strace-static-x86_64: Process 5945 attached ./strace-static-x86_64: Process 5944 attached [pid 5943] <... write resumed>) = 18 [pid 5942] <... write resumed>) = 1 [pid 5941] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 28 [pid 5942] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5943] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5942] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5941] exit_group(0 [pid 5945] set_robust_list(0x555556b47660, 24 [pid 5944] set_robust_list(0x555556b47660, 24 [pid 5942] exit_group(0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5945 [pid 5945] <... set_robust_list resumed>) = 0 [pid 5944] <... set_robust_list resumed>) = 0 [pid 5943] <... bpf resumed>) = 3 [pid 5942] <... exit_group resumed>) = ? [pid 5941] <... exit_group resumed>) = ? [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5944 [pid 5945] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5944] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5943] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5945] <... prctl resumed>) = 0 [pid 5944] <... prctl resumed>) = 0 [pid 5943] <... bpf resumed>) = 4 [pid 5945] setpgid(0, 0 [pid 5944] setpgid(0, 0 [pid 5942] +++ exited with 0 +++ [pid 5945] <... setpgid resumed>) = 0 [pid 5944] <... setpgid resumed>) = 0 [pid 5943] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5941] +++ exited with 0 +++ [pid 5943] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5942, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5941, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5943] write(6, "3", 1 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5943] <... write resumed>) = 1 [pid 5945] <... openat resumed>) = 3 [pid 5944] <... openat resumed>) = 3 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5945] write(3, "1000", 4 [pid 5944] write(3, "1000", 4 [pid 5945] <... write resumed>) = 4 [pid 5945] close(3 [pid 5943] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5945] <... close resumed>) = 0 [pid 5944] <... write resumed>) = 4 [pid 5943] exit_group(0) = ? executing program [pid 5945] write(1, "executing program\n", 18 [pid 5944] close(3 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5945] <... write resumed>) = 18 [pid 5944] <... close resumed>) = 0 [pid 5945] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148executing program [pid 5944] write(1, "executing program\n", 18 [pid 5943] +++ exited with 0 +++ [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5944] <... write resumed>) = 18 ./strace-static-x86_64: Process 5947 attached ./strace-static-x86_64: Process 5946 attached [pid 5945] <... bpf resumed>) = 3 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5943, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5944] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5947] set_robust_list(0x555556b47660, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5946 [pid 5947] <... set_robust_list resumed>) = 0 [pid 5946] set_robust_list(0x555556b47660, 24 [pid 5945] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5947 [pid 5947] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5946] <... set_robust_list resumed>) = 0 [pid 5947] <... prctl resumed>) = 0 [pid 5946] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5945] <... bpf resumed>) = 4 [pid 5944] <... bpf resumed>) = 3 [pid 5947] setpgid(0, 0) = 0 [pid 5946] <... prctl resumed>) = 0 [pid 5945] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5944] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5946] setpgid(0, 0 [pid 5945] <... socket resumed>) = 5 [pid 5944] <... bpf resumed>) = 4 [pid 5947] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5948 attached [pid 5946] <... setpgid resumed>) = 0 [pid 5945] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5944] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5948 [pid 5947] write(3, "1000", 4) = 4 [pid 5945] <... openat resumed>) = 6 [pid 5948] set_robust_list(0x555556b47660, 24 [pid 5947] close(3 [pid 5946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5944] <... socket resumed>) = 5 [pid 5948] <... set_robust_list resumed>) = 0 [pid 5947] <... close resumed>) = 0 [pid 5946] <... openat resumed>) = 3 [pid 5945] write(6, "3", 1 [pid 5944] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5948] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5947] write(1, "executing program\n", 18executing program [pid 5948] <... prctl resumed>) = 0 [pid 5946] write(3, "1000", 4 [pid 5945] <... write resumed>) = 1 [pid 5944] <... openat resumed>) = 6 [pid 5948] setpgid(0, 0 [pid 5947] <... write resumed>) = 18 [pid 5946] <... write resumed>) = 4 [pid 5948] <... setpgid resumed>) = 0 [pid 5947] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5946] close(3 [pid 5945] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5944] write(6, "3", 1 [pid 5948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5946] <... close resumed>) = 0 [pid 5945] <... sendmsg resumed>) = 28 [pid 5948] <... openat resumed>) = 3 [pid 5946] write(1, "executing program\n", 18 [pid 5945] exit_group(0 [pid 5944] <... write resumed>) = 1 executing program [pid 5948] write(3, "1000", 4 [pid 5946] <... write resumed>) = 18 [pid 5945] <... exit_group resumed>) = ? [pid 5944] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5948] <... write resumed>) = 4 [pid 5946] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5948] close(3 [pid 5947] <... bpf resumed>) = 3 [pid 5944] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5948] <... close resumed>) = 0 executing program [pid 5947] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5946] <... bpf resumed>) = 3 [pid 5945] +++ exited with 0 +++ [pid 5944] exit_group(0 [pid 5948] write(1, "executing program\n", 18) = 18 [pid 5944] <... exit_group resumed>) = ? [pid 5948] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5947] <... bpf resumed>) = 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5945, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5947] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5946] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5948] <... bpf resumed>) = 3 [pid 5947] <... socket resumed>) = 5 [pid 5944] +++ exited with 0 +++ [pid 5947] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5948] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5947] <... openat resumed>) = 6 [pid 5946] <... bpf resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5944, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5948] <... bpf resumed>) = 4 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5948] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5947] write(6, "3", 1 [pid 5946] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5948] <... socket resumed>) = 5 [pid 5947] <... write resumed>) = 1 [pid 5946] <... socket resumed>) = 5 [pid 5948] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5947] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5946] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... restart_syscall resumed>) = 0 [pid 5948] <... openat resumed>) = 6 [pid 5947] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5946] <... openat resumed>) = 6 ./strace-static-x86_64: Process 5949 attached [pid 5947] exit_group(0 [pid 5946] write(6, "3", 1 [pid 5949] set_robust_list(0x555556b47660, 24 [pid 5948] write(6, "3", 1 [pid 5947] <... exit_group resumed>) = ? [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5949 [pid 5949] <... set_robust_list resumed>) = 0 [pid 5948] <... write resumed>) = 1 [pid 5946] <... write resumed>) = 1 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5948] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5946] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 5950 attached [pid 5949] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5946] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5950] set_robust_list(0x555556b47660, 24 [pid 5949] <... prctl resumed>) = 0 [pid 5948] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5946] exit_group(0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5950 [pid 5950] <... set_robust_list resumed>) = 0 [pid 5949] setpgid(0, 0 [pid 5948] exit_group(0 [pid 5947] +++ exited with 0 +++ [pid 5946] <... exit_group resumed>) = ? [pid 5950] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5949] <... setpgid resumed>) = 0 [pid 5948] <... exit_group resumed>) = ? [pid 5950] <... prctl resumed>) = 0 [pid 5946] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5947, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5950] setpgid(0, 0 [pid 5949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5950] <... setpgid resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5946, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5951 attached [pid 5949] <... openat resumed>) = 3 [pid 5948] +++ exited with 0 +++ [pid 5950] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5952 attached [pid 5950] write(3, "1000", 4 [pid 5949] write(3, "1000", 4 [pid 5951] set_robust_list(0x555556b47660, 24) = 0 [pid 5949] <... write resumed>) = 4 [pid 5949] close(3 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5948, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5951] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5949] <... close resumed>) = 0 [pid 5950] <... write resumed>) = 4 executing program [pid 5949] write(1, "executing program\n", 18 [pid 5950] close(3 [pid 5951] <... prctl resumed>) = 0 executing program [pid 5949] <... write resumed>) = 18 [pid 5950] <... close resumed>) = 0 [pid 5951] setpgid(0, 0 [pid 5950] write(1, "executing program\n", 18 [pid 5952] set_robust_list(0x555556b47660, 24 [pid 5950] <... write resumed>) = 18 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5952 [pid 5952] <... set_robust_list resumed>) = 0 [pid 5951] <... setpgid resumed>) = 0 [pid 5950] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5949] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5951 [pid 5952] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5950] <... bpf resumed>) = 3 [pid 5949] <... bpf resumed>) = 3 [pid 5951] <... openat resumed>) = 3 [pid 5950] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5952] <... prctl resumed>) = 0 [pid 5952] setpgid(0, 0) = 0 [pid 5951] write(3, "1000", 4 [pid 5952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5951] <... write resumed>) = 4 [pid 5949] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5951] close(3) = 0 [pid 5950] <... bpf resumed>) = 4 [pid 5952] <... openat resumed>) = 3 [pid 5951] write(1, "executing program\n", 18executing program [pid 5952] write(3, "1000", 4 [pid 5951] <... write resumed>) = 18 [pid 5949] <... bpf resumed>) = 4 [pid 5952] <... write resumed>) = 4 [pid 5951] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5950] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5952] close(3 [pid 5949] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5949] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 5953 attached [pid 5952] <... close resumed>) = 0 [pid 5951] <... bpf resumed>) = 3 [pid 5950] <... socket resumed>) = 5 [pid 5949] <... openat resumed>) = 6 [pid 5953] set_robust_list(0x555556b47660, 24 executing program [pid 5952] write(1, "executing program\n", 18 [pid 5950] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5953] <... set_robust_list resumed>) = 0 [pid 5952] <... write resumed>) = 18 [pid 5951] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5950] <... openat resumed>) = 6 [pid 5949] write(6, "3", 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5953 [pid 5953] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5952] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5951] <... bpf resumed>) = 4 [pid 5950] write(6, "3", 1 [pid 5953] <... prctl resumed>) = 0 [pid 5949] <... write resumed>) = 1 [pid 5953] setpgid(0, 0 [pid 5951] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5950] <... write resumed>) = 1 [pid 5949] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5953] <... setpgid resumed>) = 0 [pid 5952] <... bpf resumed>) = 3 [pid 5951] <... socket resumed>) = 5 [pid 5949] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5952] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5951] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5950] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5949] exit_group(0 [pid 5953] <... openat resumed>) = 3 [pid 5950] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5953] write(3, "1000", 4 [pid 5952] <... bpf resumed>) = 4 [pid 5951] <... openat resumed>) = 6 [pid 5949] <... exit_group resumed>) = ? executing program [pid 5953] <... write resumed>) = 4 [pid 5952] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5951] write(6, "3", 1 [pid 5950] exit_group(0 [pid 5953] close(3 [pid 5952] <... socket resumed>) = 5 [pid 5953] <... close resumed>) = 0 [pid 5952] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5951] <... write resumed>) = 1 [pid 5953] write(1, "executing program\n", 18 [pid 5952] <... openat resumed>) = 6 [pid 5951] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5953] <... write resumed>) = 18 [pid 5951] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5950] <... exit_group resumed>) = ? [pid 5949] +++ exited with 0 +++ [pid 5953] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5952] write(6, "3", 1 [pid 5951] exit_group(0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5949, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5952] <... write resumed>) = 1 [pid 5951] <... exit_group resumed>) = ? [pid 5950] +++ exited with 0 +++ [pid 5953] <... bpf resumed>) = 3 [pid 5953] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5952] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5951] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5951, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5953] <... bpf resumed>) = 4 [pid 5952] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5950, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5953] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5952] exit_group(0./strace-static-x86_64: Process 5954 attached [pid 5953] <... socket resumed>) = 5 [pid 5952] <... exit_group resumed>) = ? [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5954 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5954] set_robust_list(0x555556b47660, 24 [pid 5953] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5955 attached [pid 5954] <... set_robust_list resumed>) = 0 [pid 5953] <... openat resumed>) = 6 [pid 5952] +++ exited with 0 +++ [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5955] set_robust_list(0x555556b47660, 24 [pid 5954] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5953] write(6, "3", 1 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5952, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5954] <... prctl resumed>) = 0 [pid 5953] <... write resumed>) = 1 [pid 5954] setpgid(0, 0 [pid 5953] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5954] <... setpgid resumed>) = 0 [pid 5953] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) ./strace-static-x86_64: Process 5956 attached [pid 5955] <... set_robust_list resumed>) = 0 [pid 5954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5955 [pid 5956] set_robust_list(0x555556b47660, 24) = 0 [pid 5955] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5954] <... openat resumed>) = 3 [pid 5953] exit_group(0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5956 [pid 5956] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5955] <... prctl resumed>) = 0 [pid 5954] write(3, "1000", 4 [pid 5953] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5957 attached [pid 5956] <... prctl resumed>) = 0 [pid 5955] setpgid(0, 0 [pid 5956] setpgid(0, 0 [pid 5955] <... setpgid resumed>) = 0 [pid 5956] <... setpgid resumed>) = 0 [pid 5955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5954] <... write resumed>) = 4 [pid 5957] set_robust_list(0x555556b47660, 24 [pid 5954] close(3 [pid 5957] <... set_robust_list resumed>) = 0 [pid 5954] <... close resumed>) = 0 [pid 5956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5957] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5956] <... openat resumed>) = 3 [pid 5955] <... openat resumed>) = 3 [pid 5954] write(1, "executing program\n", 18executing program [pid 5957] <... prctl resumed>) = 0 [pid 5956] write(3, "1000", 4 [pid 5955] write(3, "1000", 4 [pid 5954] <... write resumed>) = 18 [pid 5957] setpgid(0, 0 [pid 5956] <... write resumed>) = 4 [pid 5955] <... write resumed>) = 4 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5957 [pid 5957] <... setpgid resumed>) = 0 [pid 5954] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5956] close(3 [pid 5955] close(3 [pid 5956] <... close resumed>) = 0 [pid 5955] <... close resumed>) = 0 executing program executing program [pid 5956] write(1, "executing program\n", 18 [pid 5955] write(1, "executing program\n", 18 [pid 5954] <... bpf resumed>) = 3 [pid 5956] <... write resumed>) = 18 [pid 5955] <... write resumed>) = 18 [pid 5956] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5955] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5953] +++ exited with 0 +++ [pid 5957] <... openat resumed>) = 3 [pid 5954] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5953, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5957] write(3, "1000", 4) = 4 executing program [pid 5957] close(3) = 0 [pid 5957] write(1, "executing program\n", 18) = 18 [pid 5957] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 5956] <... bpf resumed>) = 3 [pid 5955] <... bpf resumed>) = 3 [pid 5957] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5956] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5955] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5954] <... bpf resumed>) = 4 [pid 5957] <... bpf resumed>) = 4 [pid 5956] <... bpf resumed>) = 4 [pid 5955] <... bpf resumed>) = 4 [pid 5954] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5957] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5956] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5955] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5954] <... socket resumed>) = 5 [pid 5957] <... socket resumed>) = 5 [pid 5954] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 5959 attached [pid 5957] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5956] <... socket resumed>) = 5 [pid 5955] <... socket resumed>) = 5 [pid 5954] <... openat resumed>) = 6 [pid 5959] set_robust_list(0x555556b47660, 24 [pid 5957] <... openat resumed>) = 6 [pid 5956] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5955] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5954] write(6, "3", 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5959 [pid 5959] <... set_robust_list resumed>) = 0 [pid 5957] write(6, "3", 1 [pid 5955] <... openat resumed>) = 6 [pid 5954] <... write resumed>) = 1 [pid 5959] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5957] <... write resumed>) = 1 [pid 5956] <... openat resumed>) = 6 [pid 5955] write(6, "3", 1 [pid 5954] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5959] <... prctl resumed>) = 0 [pid 5957] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5956] write(6, "3", 1 [pid 5955] <... write resumed>) = 1 [pid 5959] setpgid(0, 0 [pid 5957] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5956] <... write resumed>) = 1 [pid 5955] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5954] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5959] <... setpgid resumed>) = 0 [pid 5957] exit_group(0 [pid 5956] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5955] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5954] exit_group(0 [pid 5959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5957] <... exit_group resumed>) = ? [pid 5956] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5955] exit_group(0 [pid 5954] <... exit_group resumed>) = ? [pid 5959] <... openat resumed>) = 3 [pid 5957] +++ exited with 0 +++ [pid 5956] exit_group(0 [pid 5955] <... exit_group resumed>) = ? [pid 5959] write(3, "1000", 4 [pid 5956] <... exit_group resumed>) = ? [pid 5954] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5957, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5959] <... write resumed>) = 4 [pid 5959] close(3 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5954, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5959] <... close resumed>) = 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5959] write(1, "executing program\n", 18executing program ) = 18 [pid 5959] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 5956] +++ exited with 0 +++ [pid 5955] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5955, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5959] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5956, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5959] <... bpf resumed>) = 4 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5959] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5845] <... restart_syscall resumed>) = 0 [pid 5959] <... socket resumed>) = 5 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... restart_syscall resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5959] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 ./strace-static-x86_64: Process 5960 attached [pid 5959] write(6, "3", 1 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5961 attached [pid 5960] set_robust_list(0x555556b47660, 24 [pid 5959] <... write resumed>) = 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5960 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5962 attached [pid 5961] set_robust_list(0x555556b47660, 24 [pid 5960] <... set_robust_list resumed>) = 0 [pid 5959] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5961 ./strace-static-x86_64: Process 5963 attached [pid 5962] set_robust_list(0x555556b47660, 24 [pid 5961] <... set_robust_list resumed>) = 0 [pid 5959] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5963] set_robust_list(0x555556b47660, 24 [pid 5962] <... set_robust_list resumed>) = 0 [pid 5960] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5959] exit_group(0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5962 [pid 5963] <... set_robust_list resumed>) = 0 [pid 5962] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5961] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5960] <... prctl resumed>) = 0 [pid 5959] <... exit_group resumed>) = ? [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5963 [pid 5963] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5962] <... prctl resumed>) = 0 [pid 5960] setpgid(0, 0 [pid 5961] <... prctl resumed>) = 0 [pid 5963] <... prctl resumed>) = 0 [pid 5962] setpgid(0, 0 [pid 5961] setpgid(0, 0 [pid 5960] <... setpgid resumed>) = 0 [pid 5961] <... setpgid resumed>) = 0 [pid 5963] setpgid(0, 0 [pid 5962] <... setpgid resumed>) = 0 [pid 5961] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5963] <... setpgid resumed>) = 0 [pid 5960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5961] <... openat resumed>) = 3 [pid 5961] write(3, "1000", 4 [pid 5960] <... openat resumed>) = 3 [pid 5963] <... openat resumed>) = 3 [pid 5961] <... write resumed>) = 4 [pid 5961] close(3 [pid 5963] write(3, "1000", 4 [pid 5962] <... openat resumed>) = 3 [pid 5960] write(3, "1000", 4 [pid 5959] +++ exited with 0 +++ executing program executing program [pid 5963] <... write resumed>) = 4 [pid 5960] <... write resumed>) = 4 [pid 5963] close(3 [pid 5960] close(3 [pid 5963] <... close resumed>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5959, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5963] write(1, "executing program\n", 18 [pid 5962] write(3, "1000", 4 [pid 5960] <... close resumed>) = 0 [pid 5963] <... write resumed>) = 18 [pid 5962] <... write resumed>) = 4 [pid 5961] <... close resumed>) = 0 [pid 5960] write(1, "executing program\n", 18 [pid 5961] write(1, "executing program\n", 18) = 18 [pid 5961] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148executing program [pid 5963] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5962] close(3 [pid 5960] <... write resumed>) = 18 [pid 5963] <... bpf resumed>) = 3 [pid 5962] <... close resumed>) = 0 [pid 5961] <... bpf resumed>) = 3 [pid 5960] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5963] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5962] write(1, "executing program\n", 18 [pid 5961] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program [pid 5962] <... write resumed>) = 18 [pid 5960] <... bpf resumed>) = 3 [pid 5962] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5960] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5963] <... bpf resumed>) = 4 [pid 5962] <... bpf resumed>) = 3 [pid 5961] <... bpf resumed>) = 4 [pid 5960] <... bpf resumed>) = 4 [pid 5963] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5960] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5963] <... socket resumed>) = 5 [pid 5960] <... socket resumed>) = 5 ./strace-static-x86_64: Process 5964 attached [pid 5962] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5964 [pid 5963] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5961] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5960] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5964] set_robust_list(0x555556b47660, 24 [pid 5962] <... bpf resumed>) = 4 [pid 5964] <... set_robust_list resumed>) = 0 [pid 5962] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5961] <... socket resumed>) = 5 [pid 5960] <... openat resumed>) = 6 [pid 5964] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5962] <... socket resumed>) = 5 [pid 5961] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5964] <... prctl resumed>) = 0 [pid 5963] <... openat resumed>) = 6 [pid 5962] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5960] write(6, "3", 1 [pid 5961] <... openat resumed>) = 6 [pid 5964] setpgid(0, 0 [pid 5963] write(6, "3", 1 [pid 5962] <... openat resumed>) = 6 [pid 5960] <... write resumed>) = 1 [pid 5964] <... setpgid resumed>) = 0 [pid 5961] write(6, "3", 1 [pid 5964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5963] <... write resumed>) = 1 [pid 5962] write(6, "3", 1 [pid 5961] <... write resumed>) = 1 [pid 5960] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5964] <... openat resumed>) = 3 [pid 5963] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5962] <... write resumed>) = 1 [pid 5961] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5960] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5964] write(3, "1000", 4 [pid 5963] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5962] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5961] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5960] exit_group(0 [pid 5964] <... write resumed>) = 4 [pid 5963] exit_group(0 [pid 5962] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5961] exit_group(0 [pid 5964] close(3 [pid 5962] exit_group(0 [pid 5960] <... exit_group resumed>) = ? [pid 5964] <... close resumed>) = 0 [pid 5963] <... exit_group resumed>) = ? [pid 5962] <... exit_group resumed>) = ? [pid 5961] <... exit_group resumed>) = ? [pid 5964] write(1, "executing program\n", 18executing program ) = 18 [pid 5960] +++ exited with 0 +++ [pid 5964] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5963] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5960, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5963, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5849] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5964] <... bpf resumed>) = 3 [pid 5962] +++ exited with 0 +++ [pid 5961] +++ exited with 0 +++ [pid 5964] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5961, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5962, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 5965 attached ./strace-static-x86_64: Process 5966 attached [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5966] set_robust_list(0x555556b47660, 24 [pid 5965] set_robust_list(0x555556b47660, 24 [pid 5964] <... bpf resumed>) = 4 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5965 [pid 5966] <... set_robust_list resumed>) = 0 [pid 5965] <... set_robust_list resumed>) = 0 [pid 5966] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5966 [pid 5966] <... prctl resumed>) = 0 [pid 5965] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5964] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5966] setpgid(0, 0 [pid 5965] <... prctl resumed>) = 0 [pid 5964] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] <... restart_syscall resumed>) = 0 [pid 5966] <... setpgid resumed>) = 0 [pid 5965] setpgid(0, 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5965] <... setpgid resumed>) = 0 [pid 5964] <... openat resumed>) = 6 [pid 5965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5964] write(6, "3", 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5965] <... openat resumed>) = 3 [pid 5964] <... write resumed>) = 1 [pid 5964] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) ./strace-static-x86_64: Process 5967 attached [pid 5966] <... openat resumed>) = 3 [pid 5965] write(3, "1000", 4 [pid 5964] exit_group(0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5967] set_robust_list(0x555556b47660, 24 [pid 5966] write(3, "1000", 4 [pid 5965] <... write resumed>) = 4 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5967 [pid 5967] <... set_robust_list resumed>) = 0 [pid 5966] <... write resumed>) = 4 [pid 5965] close(3 [pid 5966] close(3 [pid 5965] <... close resumed>) = 0 [pid 5966] <... close resumed>) = 0 [pid 5965] write(1, "executing program\n", 18executing program ./strace-static-x86_64: Process 5968 attached executing program [pid 5967] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5966] write(1, "executing program\n", 18 [pid 5965] <... write resumed>) = 18 [pid 5964] <... exit_group resumed>) = ? [pid 5968] set_robust_list(0x555556b47660, 24 [pid 5967] <... prctl resumed>) = 0 [pid 5966] <... write resumed>) = 18 [pid 5965] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5968 [pid 5968] <... set_robust_list resumed>) = 0 [pid 5967] setpgid(0, 0 [pid 5966] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5968] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5967] <... setpgid resumed>) = 0 [pid 5965] <... bpf resumed>) = 3 [pid 5964] +++ exited with 0 +++ [pid 5968] <... prctl resumed>) = 0 [pid 5966] <... bpf resumed>) = 3 [pid 5968] setpgid(0, 0 [pid 5967] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5966] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5968] <... setpgid resumed>) = 0 [pid 5967] <... openat resumed>) = 3 [pid 5965] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5964, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5968] <... openat resumed>) = 3 [pid 5967] write(3, "1000", 4 [pid 5966] <... bpf resumed>) = 4 [pid 5966] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 5969 attached [pid 5968] write(3, "1000", 4 [pid 5967] <... write resumed>) = 4 [pid 5965] <... bpf resumed>) = 4 [pid 5969] set_robust_list(0x555556b47660, 24 [pid 5966] <... socket resumed>) = 5 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5969 [pid 5969] <... set_robust_list resumed>) = 0 [pid 5966] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5969] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5968] <... write resumed>) = 4 [pid 5967] close(3 [pid 5966] <... openat resumed>) = 6 [pid 5965] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5969] <... prctl resumed>) = 0 [pid 5968] close(3 [pid 5967] <... close resumed>) = 0 [pid 5965] <... socket resumed>) = 5 executing program [pid 5968] <... close resumed>) = 0 [pid 5967] write(1, "executing program\n", 18 [pid 5966] write(6, "3", 1 [pid 5965] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5969] setpgid(0, 0 [pid 5968] write(1, "executing program\n", 18 [pid 5967] <... write resumed>) = 18 executing program [pid 5965] <... openat resumed>) = 6 [pid 5969] <... setpgid resumed>) = 0 [pid 5968] <... write resumed>) = 18 [pid 5967] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5966] <... write resumed>) = 1 [pid 5969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5968] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5965] write(6, "3", 1 [pid 5969] <... openat resumed>) = 3 [pid 5966] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5969] write(3, "1000", 4 [pid 5966] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5969] <... write resumed>) = 4 [pid 5966] exit_group(0 [pid 5965] <... write resumed>) = 1 [pid 5969] close(3) = 0 [pid 5966] <... exit_group resumed>) = ? [pid 5968] <... bpf resumed>) = 3 [pid 5967] <... bpf resumed>) = 3 [pid 5965] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5969] write(1, "executing program\n", 18executing program [pid 5968] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5967] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5965] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5969] <... write resumed>) = 18 [pid 5965] exit_group(0 [pid 5969] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5968] <... bpf resumed>) = 4 [pid 5967] <... bpf resumed>) = 4 [pid 5966] +++ exited with 0 +++ [pid 5965] <... exit_group resumed>) = ? [pid 5969] <... bpf resumed>) = 3 [pid 5968] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5967] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5969] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5968] <... socket resumed>) = 5 [pid 5967] <... socket resumed>) = 5 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5966, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5969] <... bpf resumed>) = 4 [pid 5968] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5967] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5969] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5968] <... openat resumed>) = 6 [pid 5967] <... openat resumed>) = 6 [pid 5965] +++ exited with 0 +++ [pid 5846] <... restart_syscall resumed>) = 0 [pid 5969] <... socket resumed>) = 5 [pid 5968] write(6, "3", 1 [pid 5967] write(6, "3", 1 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5965, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5969] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5968] <... write resumed>) = 1 [pid 5967] <... write resumed>) = 1 [pid 5969] <... openat resumed>) = 6 [pid 5968] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5967] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5969] write(6, "3", 1 [pid 5968] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5967] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5969] <... write resumed>) = 1 [pid 5968] exit_group(0 [pid 5967] exit_group(0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5969] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5967] <... exit_group resumed>) = ? [pid 5968] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5970 attached [pid 5970] set_robust_list(0x555556b47660, 24) = 0 [pid 5970] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5971 attached ) = 0 [pid 5969] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5970] setpgid(0, 0) = 0 [pid 5971] set_robust_list(0x555556b47660, 24 [pid 5970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5969] exit_group(0 [pid 5967] +++ exited with 0 +++ executing program [pid 5971] <... set_robust_list resumed>) = 0 [pid 5970] <... openat resumed>) = 3 [pid 5969] <... exit_group resumed>) = ? [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5967, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5970 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5970] write(3, "1000", 4 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5970] <... write resumed>) = 4 [pid 5970] close(3) = 0 [pid 5970] write(1, "executing program\n", 18 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5971] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5970] <... write resumed>) = 18 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5971 ./strace-static-x86_64: Process 5972 attached [pid 5972] set_robust_list(0x555556b47660, 24 [pid 5971] <... prctl resumed>) = 0 [pid 5970] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5972] <... set_robust_list resumed>) = 0 [pid 5971] setpgid(0, 0 [pid 5972] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5971] <... setpgid resumed>) = 0 [pid 5971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5972] <... prctl resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5972 [pid 5972] setpgid(0, 0 [pid 5971] <... openat resumed>) = 3 [pid 5972] <... setpgid resumed>) = 0 [pid 5970] <... bpf resumed>) = 3 [pid 5972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5968] +++ exited with 0 +++ [pid 5971] write(3, "1000", 4 [pid 5970] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5969] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5968, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5972] <... openat resumed>) = 3 [pid 5972] write(3, "1000", 4 [pid 5971] <... write resumed>) = 4 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5969, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5972] <... write resumed>) = 4 [pid 5971] close(3 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5972] close(3 [pid 5971] <... close resumed>) = 0 [pid 5971] write(1, "executing program\n", 18executing program [pid 5970] <... bpf resumed>) = 4 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5972] <... close resumed>) = 0 [pid 5971] <... write resumed>) = 18 executing program [pid 5972] write(1, "executing program\n", 18 [pid 5971] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5970] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5972] <... write resumed>) = 18 [pid 5971] <... bpf resumed>) = 3 [pid 5970] <... socket resumed>) = 5 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5972] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 5973 attached [pid 5970] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 5974 attached [pid 5973] set_robust_list(0x555556b47660, 24 [pid 5972] <... bpf resumed>) = 3 [pid 5973] <... set_robust_list resumed>) = 0 [pid 5973] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5970] <... openat resumed>) = 6 [pid 5974] set_robust_list(0x555556b47660, 24 [pid 5973] <... prctl resumed>) = 0 [pid 5971] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5970] write(6, "3", 1 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5973 [pid 5974] <... set_robust_list resumed>) = 0 [pid 5973] setpgid(0, 0 [pid 5972] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5970] <... write resumed>) = 1 [pid 5974] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5973] <... setpgid resumed>) = 0 [pid 5971] <... bpf resumed>) = 4 [pid 5970] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5974] <... prctl resumed>) = 0 [pid 5973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5972] <... bpf resumed>) = 4 [pid 5970] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5974 [pid 5974] setpgid(0, 0 [pid 5973] <... openat resumed>) = 3 [pid 5972] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5971] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5970] exit_group(0 [pid 5974] <... setpgid resumed>) = 0 [pid 5973] write(3, "1000", 4 [pid 5972] <... socket resumed>) = 5 [pid 5971] <... socket resumed>) = 5 [pid 5970] <... exit_group resumed>) = ? [pid 5974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5973] <... write resumed>) = 4 [pid 5972] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5971] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5974] <... openat resumed>) = 3 [pid 5972] <... openat resumed>) = 6 [pid 5974] write(3, "1000", 4 [pid 5972] write(6, "3", 1 [pid 5974] <... write resumed>) = 4 [pid 5972] <... write resumed>) = 1 [pid 5974] close(3 [pid 5973] close(3 [pid 5972] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5974] <... close resumed>) = 0 [pid 5973] <... close resumed>) = 0 [pid 5972] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program executing program [pid 5971] <... openat resumed>) = 6 [pid 5974] write(1, "executing program\n", 18 [pid 5973] write(1, "executing program\n", 18 [pid 5972] exit_group(0 [pid 5974] <... write resumed>) = 18 [pid 5973] <... write resumed>) = 18 [pid 5971] write(6, "3", 1 [pid 5970] +++ exited with 0 +++ [pid 5974] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5973] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5972] <... exit_group resumed>) = ? [pid 5971] <... write resumed>) = 1 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5970, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5974] <... bpf resumed>) = 3 [pid 5973] <... bpf resumed>) = 3 [pid 5971] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5973] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5971] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5973] <... bpf resumed>) = 4 [pid 5971] exit_group(0 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5973] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5971] <... exit_group resumed>) = ? [pid 5846] <... restart_syscall resumed>) = 0 [pid 5974] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5973] <... socket resumed>) = 5 [pid 5972] +++ exited with 0 +++ [pid 5973] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5971] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5971, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5974] <... bpf resumed>) = 4 [pid 5973] <... openat resumed>) = 6 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5972, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5974] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5973] write(6, "3", 1 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5974] <... socket resumed>) = 5 [pid 5973] <... write resumed>) = 1 [pid 5974] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5973] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 5975 attached [pid 5974] <... openat resumed>) = 6 [pid 5973] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] <... restart_syscall resumed>) = 0 [pid 5975] set_robust_list(0x555556b47660, 24 [pid 5973] exit_group(0 [pid 5975] <... set_robust_list resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5975 [pid 5975] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5974] write(6, "3", 1 [pid 5973] <... exit_group resumed>) = ? [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5975] <... prctl resumed>) = 0 [pid 5975] setpgid(0, 0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5975] <... setpgid resumed>) = 0 [pid 5975] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5976 attached [pid 5975] <... openat resumed>) = 3 [pid 5974] <... write resumed>) = 1 [pid 5976] set_robust_list(0x555556b47660, 24 [pid 5975] write(3, "1000", 4 [pid 5974] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5976 ./strace-static-x86_64: Process 5977 attached [pid 5976] <... set_robust_list resumed>) = 0 [pid 5975] <... write resumed>) = 4 [pid 5974] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5973] +++ exited with 0 +++ [pid 5977] set_robust_list(0x555556b47660, 24 [pid 5976] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5975] close(3 [pid 5974] exit_group(0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5977 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5973, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5977] <... set_robust_list resumed>) = 0 [pid 5976] <... prctl resumed>) = 0 [pid 5975] <... close resumed>) = 0 [pid 5974] <... exit_group resumed>) = ? [pid 5977] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5976] setpgid(0, 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5977] <... prctl resumed>) = 0 [pid 5976] <... setpgid resumed>) = 0 [pid 5975] write(1, "executing program\n", 18 [pid 5977] setpgid(0, 0 [pid 5976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5977] <... setpgid resumed>) = 0 [pid 5977] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 5977] write(3, "1000", 4./strace-static-x86_64: Process 5978 attached ) = 4 [pid 5976] <... openat resumed>) = 3 [pid 5975] <... write resumed>) = 18 [pid 5974] +++ exited with 0 +++ [pid 5978] set_robust_list(0x555556b47660, 24 [pid 5977] close(3 [pid 5976] write(3, "1000", 4 executing program [pid 5975] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5974, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5978 [pid 5978] <... set_robust_list resumed>) = 0 [pid 5977] <... close resumed>) = 0 [pid 5976] <... write resumed>) = 4 [pid 5977] write(1, "executing program\n", 18) = 18 [pid 5977] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5978] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5977] <... bpf resumed>) = 3 [pid 5976] close(3 [pid 5975] <... bpf resumed>) = 3 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5978] <... prctl resumed>) = 0 [pid 5976] <... close resumed>) = 0 executing program [pid 5978] setpgid(0, 0 [pid 5976] write(1, "executing program\n", 18 [pid 5975] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5978] <... setpgid resumed>) = 0 [pid 5976] <... write resumed>) = 18 [pid 5978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5976] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 5979 attached [pid 5977] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5976] <... bpf resumed>) = 3 [pid 5975] <... bpf resumed>) = 4 [pid 5979] set_robust_list(0x555556b47660, 24 [pid 5978] <... openat resumed>) = 3 [pid 5977] <... bpf resumed>) = 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5979 [pid 5979] <... set_robust_list resumed>) = 0 [pid 5978] write(3, "1000", 4 [pid 5977] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5975] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5976] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5979] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5978] <... write resumed>) = 4 [pid 5977] <... socket resumed>) = 5 [pid 5975] <... socket resumed>) = 5 [pid 5978] close(3 [pid 5976] <... bpf resumed>) = 4 [pid 5975] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5979] <... prctl resumed>) = 0 [pid 5978] <... close resumed>) = 0 [pid 5977] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5976] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC executing program [pid 5979] setpgid(0, 0 [pid 5978] write(1, "executing program\n", 18 [pid 5977] <... openat resumed>) = 6 [pid 5976] <... socket resumed>) = 5 [pid 5975] <... openat resumed>) = 6 [pid 5979] <... setpgid resumed>) = 0 [pid 5978] <... write resumed>) = 18 [pid 5976] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5975] write(6, "3", 1 [pid 5979] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5978] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5977] write(6, "3", 1 [pid 5976] <... openat resumed>) = 6 [pid 5975] <... write resumed>) = 1 [pid 5979] <... openat resumed>) = 3 [pid 5977] <... write resumed>) = 1 [pid 5979] write(3, "1000", 4 [pid 5977] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5979] <... write resumed>) = 4 [pid 5978] <... bpf resumed>) = 3 [pid 5977] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5979] close(3 [pid 5978] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5977] exit_group(0 [pid 5976] write(6, "3", 1 [pid 5975] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5979] <... close resumed>) = 0 [pid 5978] <... bpf resumed>) = 4 [pid 5977] <... exit_group resumed>) = ? [pid 5976] <... write resumed>) = 1 [pid 5975] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 5979] write(1, "executing program\n", 18 [pid 5978] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5976] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5975] exit_group(0 [pid 5979] <... write resumed>) = 18 [pid 5978] <... socket resumed>) = 5 [pid 5977] +++ exited with 0 +++ [pid 5976] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5975] <... exit_group resumed>) = ? [pid 5979] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5978] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5976] exit_group(0 [pid 5978] <... openat resumed>) = 6 [pid 5976] <... exit_group resumed>) = ? [pid 5975] +++ exited with 0 +++ [pid 5979] <... bpf resumed>) = 3 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5977, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5975, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5979] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5978] write(6, "3", 1 [pid 5976] +++ exited with 0 +++ [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5978] <... write resumed>) = 1 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5978] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5976, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5978] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5978] exit_group(0) = ? ./strace-static-x86_64: Process 5980 attached [pid 5979] <... bpf resumed>) = 4 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5980] set_robust_list(0x555556b47660, 24 [pid 5979] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5981 attached [pid 5980] <... set_robust_list resumed>) = 0 [pid 5978] +++ exited with 0 +++ [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5980 ./strace-static-x86_64: Process 5982 attached [pid 5981] set_robust_list(0x555556b47660, 24 [pid 5980] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5979] <... socket resumed>) = 5 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5981 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5978, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5981] <... set_robust_list resumed>) = 0 [pid 5980] <... prctl resumed>) = 0 [pid 5979] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5982 [pid 5982] set_robust_list(0x555556b47660, 24 [pid 5981] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5980] setpgid(0, 0 [pid 5981] <... prctl resumed>) = 0 [pid 5982] <... set_robust_list resumed>) = 0 [pid 5980] <... setpgid resumed>) = 0 [pid 5979] <... openat resumed>) = 6 [pid 5981] setpgid(0, 0) = 0 [pid 5981] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5982] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5979] write(6, "3", 1 [pid 5981] <... openat resumed>) = 3 [pid 5982] <... prctl resumed>) = 0 [pid 5980] <... openat resumed>) = 3 [pid 5979] <... write resumed>) = 1 [pid 5982] setpgid(0, 0 [pid 5979] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5982] <... setpgid resumed>) = 0 [pid 5979] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5981] write(3, "1000", 4 [pid 5980] write(3, "1000", 4 [pid 5981] <... write resumed>) = 4 [pid 5980] <... write resumed>) = 4 [pid 5981] close(3 [pid 5980] close(3./strace-static-x86_64: Process 5983 attached [pid 5982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5981] <... close resumed>) = 0 [pid 5980] <... close resumed>) = 0 [pid 5983] set_robust_list(0x555556b47660, 24 executing program [pid 5981] write(1, "executing program\n", 18 [pid 5980] write(1, "executing program\n", 18executing program [pid 5979] exit_group(0 [pid 5983] <... set_robust_list resumed>) = 0 [pid 5981] <... write resumed>) = 18 [pid 5980] <... write resumed>) = 18 [pid 5983] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5982] <... openat resumed>) = 3 [pid 5981] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5980] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5983] <... prctl resumed>) = 0 [pid 5982] write(3, "1000", 4 [pid 5979] <... exit_group resumed>) = ? [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5983 [pid 5983] setpgid(0, 0 [pid 5982] <... write resumed>) = 4 [pid 5981] <... bpf resumed>) = 3 [pid 5980] <... bpf resumed>) = 3 [pid 5983] <... setpgid resumed>) = 0 [pid 5982] close(3) = 0 [pid 5982] write(1, "executing program\n", 18executing program [pid 5983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5982] <... write resumed>) = 18 [pid 5981] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5980] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5982] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5981] <... bpf resumed>) = 4 [pid 5983] <... openat resumed>) = 3 [pid 5979] +++ exited with 0 +++ [pid 5981] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5980] <... bpf resumed>) = 4 [pid 5981] <... socket resumed>) = 5 [pid 5980] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5983] write(3, "1000", 4 [pid 5982] <... bpf resumed>) = 3 [pid 5981] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5980] <... socket resumed>) = 5 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5979, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5983] <... write resumed>) = 4 [pid 5981] <... openat resumed>) = 6 [pid 5980] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5983] close(3 [pid 5982] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5981] write(6, "3", 1executing program [pid 5980] <... openat resumed>) = 6 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5983] <... close resumed>) = 0 [pid 5982] <... bpf resumed>) = 4 [pid 5983] write(1, "executing program\n", 18 [ 91.602740][ T5981] FAULT_INJECTION: forcing a failure. [ 91.602740][ T5981] name fail_usercopy, interval 1, probability 0, space 0, times 1 [ 91.616032][ T5981] CPU: 1 UID: 0 PID: 5981 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 91.616061][ T5981] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 91.616081][ T5981] Call Trace: [ 91.616090][ T5981] [ 91.616103][ T5981] dump_stack_lvl+0x189/0x250 [ 91.616152][ T5981] ? __pfx____ratelimit+0x10/0x10 [ 91.616187][ T5981] ? __pfx_dump_stack_lvl+0x10/0x10 [ 91.616209][ T5981] ? __pfx__printk+0x10/0x10 [ 91.616252][ T5981] should_fail_ex+0x414/0x560 [ 91.616302][ T5981] strncpy_from_user+0x36/0x290 [ 91.616338][ T5981] strncpy_from_user_nofault+0x72/0x150 [ 91.616369][ T5981] bpf_bprintf_prepare+0xbbc/0x13d0 [ 91.616414][ T5981] ? __pfx_bpf_bprintf_prepare+0x10/0x10 [ 91.616450][ T5981] ? bpf_trace_printk+0xc1/0x190 [ 91.616476][ T5981] bpf_trace_printk+0xdb/0x190 [ 91.616494][ T5981] ? __lock_acquire+0xab9/0xd20 [ 91.616525][ T5981] ? __pfx_bpf_trace_printk+0x10/0x10 [ 91.616548][ T5981] ? bpf_trace_run2+0x186/0x4b0 [ 91.616593][ T5981] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 91.616618][ T5981] bpf_trace_run2+0x281/0x4b0 [ 91.616644][ T5981] ? bpf_trace_run2+0x186/0x4b0 [ 91.616673][ T5981] ? __pfx_bpf_trace_run2+0x10/0x10 [ 91.616703][ T5981] ? __lock_acquire+0xab9/0xd20 [ 91.616731][ T5981] ? __bpf_trace_contention_begin+0xcd/0x130 [ 91.616758][ T5981] __bpf_trace_contention_begin+0xdc/0x130 [ 91.616779][ T5981] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 91.616797][ T5981] ? do_raw_spin_lock+0x121/0x290 [ 91.616826][ T5981] ? xfd_validate_state+0x6d/0x150 [ 91.616865][ T5981] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 91.616887][ T5981] __traceiter_contention_begin+0x77/0xb0 [ 91.616924][ T5981] trace_contention_begin+0x114/0x140 [ 91.616948][ T5981] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 91.617001][ T5981] ? __lock_acquire+0xab9/0xd20 [ 91.617036][ T5981] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 91.617075][ T5981] ? __lock_acquire+0xab9/0xd20 [ 91.617111][ T5981] queued_spin_lock_slowpath+0x43/0x50 [ 91.617136][ T5981] do_raw_spin_lock+0x21f/0x290 [ 91.617164][ T5981] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 91.617201][ T5981] _raw_spin_lock_irqsave+0xb3/0xf0 [ 91.617228][ T5981] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 91.617265][ T5981] ? do_notify_parent_cldstop+0x13c/0x9a0 [ 91.617304][ T5981] do_notify_parent_cldstop+0x7c3/0x9a0 [ 91.617339][ T5981] ? __pfx_do_notify_parent_cldstop+0x10/0x10 [ 91.617401][ T5981] ptrace_stop+0x41f/0x940 [ 91.617442][ T5981] ptrace_notify+0x20f/0x2c0 [ 91.617475][ T5981] ? __pfx_ptrace_notify+0x10/0x10 [ 91.617513][ T5981] ? __pfx_ksys_write+0x10/0x10 [ 91.617552][ T5981] syscall_exit_work+0xc6/0x1d0 [ 91.617586][ T5981] do_syscall_64+0x2ad/0x3b0 [ 91.617620][ T5981] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.617649][ T5981] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.617670][ T5981] ? clear_bhb_loop+0x60/0xb0 [ 91.617696][ T5981] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.617716][ T5981] RIP: 0033:0x7f7d4bd77bd0 [ 91.617735][ T5981] Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d b1 14 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 [ 91.617757][ T5981] RSP: 002b:00007ffca308e228 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 91.617785][ T5981] RAX: 0000000000000001 RBX: 00007ffca308e240 RCX: 00007f7d4bd77bd0 [ 91.617799][ T5981] RDX: 0000000000000001 RSI: 00007ffca308e240 RDI: 0000000000000006 [ 91.617812][ T5981] RBP: 0000000000000006 R08: 0000000000000001 R09: 00007ffca308dfc7 [ 91.617824][ T5981] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 91.617836][ T5981] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 91.617868][ T5981] [pid 5982] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5981] <... write resumed>) = 1 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5983] <... write resumed>) = 18 [pid 5982] <... socket resumed>) = 5 [pid 5980] write(6, "3", 1) = 1 [pid 5980] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5980] exit_group(0) = ? [pid 5980] +++ exited with 0 +++ [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5980, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5983] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5982] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5981] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5982] <... openat resumed>) = 6 [pid 5981] <... sendmsg resumed>) = 28 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5986 attached [pid 5982] write(6, "3", 1 [pid 5981] exit_group(0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5982] <... write resumed>) = 1 [pid 5981] <... exit_group resumed>) = ? [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5986 [pid 5986] set_robust_list(0x555556b47660, 24) = 0 [pid 5986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5986] setpgid(0, 0) = 0 [pid 5986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5982] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5986] write(3, "1000", 4) = 4 [pid 5982] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 5986] close(3 [pid 5982] exit_group(0 [pid 5986] <... close resumed>) = 0 [pid 5986] write(1, "executing program\n", 18) = 18 [pid 5986] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 5987 attached ) = 3 [pid 5982] <... exit_group resumed>) = ? [pid 5981] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5981, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5988 attached [pid 5988] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5988 [pid 5988] <... set_robust_list resumed>) = 0 [pid 5987] set_robust_list(0x555556b47660, 24 [pid 5988] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5987] <... set_robust_list resumed>) = 0 [pid 5988] <... prctl resumed>) = 0 [pid 5987] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5988] setpgid(0, 0 [pid 5987] <... prctl resumed>) = 0 [pid 5988] <... setpgid resumed>) = 0 [pid 5987] setpgid(0, 0 [pid 5986] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5987] <... setpgid resumed>) = 0 [pid 5986] <... bpf resumed>) = 4 [pid 5982] +++ exited with 0 +++ [pid 5983] <... bpf resumed>) = 3 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5987 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5982, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5987] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5987] <... openat resumed>) = 3 [pid 5986] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5983] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5988] <... openat resumed>) = 3 [pid 5987] write(3, "1000", 4 [pid 5986] <... socket resumed>) = 5 [pid 5983] <... bpf resumed>) = 4 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5988] write(3, "1000", 4 [pid 5987] <... write resumed>) = 4 [pid 5986] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5983] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5988] <... write resumed>) = 4 [pid 5987] close(3 [pid 5986] <... openat resumed>) = 6 [pid 5983] <... socket resumed>) = 5 [pid 5988] close(3 [pid 5987] <... close resumed>) = 0 [pid 5986] write(6, "3", 1 [ 91.997430][ T10] cfg80211: failed to load regulatory.db [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program executing program [pid 5988] <... close resumed>) = 0 [pid 5987] write(1, "executing program\n", 18 [pid 5986] <... write resumed>) = 1 [pid 5983] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5988] write(1, "executing program\n", 18 [pid 5987] <... write resumed>) = 18 [pid 5986] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5988] <... write resumed>) = 18 [pid 5987] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5986] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5988] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5983] <... openat resumed>) = 6 ./strace-static-x86_64: Process 5989 attached [pid 5986] exit_group(0 [pid 5989] set_robust_list(0x555556b47660, 24 [pid 5987] <... bpf resumed>) = 3 [pid 5986] <... exit_group resumed>) = ? [pid 5983] write(6, "3", 1 [pid 5989] <... set_robust_list resumed>) = 0 [pid 5988] <... bpf resumed>) = 3 [pid 5989] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5989] setpgid(0, 0 [pid 5988] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5989] <... setpgid resumed>) = 0 [pid 5987] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5983] <... write resumed>) = 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5989 [pid 5983] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5983] exit_group(0) = ? [pid 5989] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5988] <... bpf resumed>) = 4 [pid 5987] <... bpf resumed>) = 4 [pid 5986] +++ exited with 0 +++ [pid 5989] <... openat resumed>) = 3 [pid 5989] write(3, "1000", 4) = 4 [pid 5988] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5987] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5986, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5989] close(3 [pid 5988] <... socket resumed>) = 5 [pid 5987] <... socket resumed>) = 5 [pid 5983] +++ exited with 0 +++ [pid 5989] <... close resumed>) = 0 [pid 5988] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5987] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5983, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5989] write(1, "executing program\n", 18executing program [pid 5988] <... openat resumed>) = 6 [pid 5989] <... write resumed>) = 18 [pid 5987] <... openat resumed>) = 6 [pid 5989] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5988] write(6, "3", 1 [pid 5987] write(6, "3", 1 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5988] <... write resumed>) = 1 ./strace-static-x86_64: Process 5990 attached [pid 5988] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5987] <... write resumed>) = 1 [pid 5988] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5987] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5990] set_robust_list(0x555556b47660, 24 [pid 5988] exit_group(0 [pid 5987] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5990] <... set_robust_list resumed>) = 0 [pid 5989] <... bpf resumed>) = 3 [pid 5988] <... exit_group resumed>) = ? [pid 5987] exit_group(0 [pid 5990] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5989] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5987] <... exit_group resumed>) = ? [pid 5989] <... bpf resumed>) = 4 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 5990 [pid 5989] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5990] <... prctl resumed>) = 0 [pid 5989] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5988] +++ exited with 0 +++ [pid 5990] setpgid(0, 0 [pid 5989] <... openat resumed>) = 6 [pid 5987] +++ exited with 0 +++ [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5990] <... setpgid resumed>) = 0 [pid 5989] write(6, "3", 1 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5988, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5989] <... write resumed>) = 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5987, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5991 attached [pid 5990] <... openat resumed>) = 3 [pid 5989] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 5992 attached [pid 5990] write(3, "1000", 4 [pid 5989] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 5991 [pid 5991] set_robust_list(0x555556b47660, 24 [pid 5990] <... write resumed>) = 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 5992 [pid 5989] exit_group(0 [pid 5991] <... set_robust_list resumed>) = 0 [pid 5990] close(3 [pid 5989] <... exit_group resumed>) = ? [pid 5991] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5990] <... close resumed>) = 0 [pid 5992] set_robust_list(0x555556b47660, 24) = 0 [pid 5992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5992] setpgid(0, 0executing program [pid 5990] write(1, "executing program\n", 18./strace-static-x86_64: Process 5993 attached [pid 5991] <... prctl resumed>) = 0 [pid 5990] <... write resumed>) = 18 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 5993 [pid 5993] set_robust_list(0x555556b47660, 24 [pid 5991] setpgid(0, 0 [pid 5993] <... set_robust_list resumed>) = 0 [pid 5992] <... setpgid resumed>) = 0 [pid 5990] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5991] <... setpgid resumed>) = 0 [pid 5989] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5989, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5993] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5991] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5993] setpgid(0, 0) = 0 [pid 5993] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5991] <... openat resumed>) = 3 [pid 5993] write(3, "1000", 4 [pid 5992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5993] <... write resumed>) = 4 [pid 5993] close(3 [pid 5991] write(3, "1000", 4 [pid 5993] <... close resumed>) = 0 [pid 5991] <... write resumed>) = 4 [pid 5993] write(1, "executing program\n", 18 [pid 5991] close(3executing program [pid 5993] <... write resumed>) = 18 [pid 5992] <... openat resumed>) = 3 [pid 5993] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5990] <... bpf resumed>) = 3 [pid 5991] <... close resumed>) = 0 [pid 5992] write(3, "1000", 4 [pid 5991] write(1, "executing program\n", 18 [pid 5992] <... write resumed>) = 4 executing program [pid 5992] close(3 [pid 5991] <... write resumed>) = 18 [pid 5990] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5991] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5994 attached [pid 5992] <... close resumed>) = 0 [pid 5991] <... bpf resumed>) = 3 [pid 5990] <... bpf resumed>) = 4 [pid 5993] <... bpf resumed>) = 3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 5994 [pid 5992] write(1, "executing program\n", 18executing program [pid 5994] set_robust_list(0x555556b47660, 24 [pid 5993] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5992] <... write resumed>) = 18 [pid 5991] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5990] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5994] <... set_robust_list resumed>) = 0 [pid 5992] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5990] <... socket resumed>) = 5 [pid 5994] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5991] <... bpf resumed>) = 4 [pid 5990] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5993] <... bpf resumed>) = 4 [pid 5993] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5992] <... bpf resumed>) = 3 [pid 5994] <... prctl resumed>) = 0 [pid 5993] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5991] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5990] <... openat resumed>) = 6 [pid 5994] setpgid(0, 0 [pid 5993] <... openat resumed>) = 6 [pid 5991] <... socket resumed>) = 5 [pid 5994] <... setpgid resumed>) = 0 [pid 5992] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5991] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5990] write(6, "3", 1 [pid 5994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5993] write(6, "3", 1 [pid 5991] <... openat resumed>) = 6 [pid 5992] <... bpf resumed>) = 4 [pid 5990] <... write resumed>) = 1 [pid 5990] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5994] <... openat resumed>) = 3 [pid 5994] write(3, "1000", 4 [pid 5993] <... write resumed>) = 1 [pid 5992] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5991] write(6, "3", 1 [pid 5990] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5993] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5994] <... write resumed>) = 4 [pid 5993] <... sendmsg resumed>) = 28 [pid 5992] <... socket resumed>) = 5 [pid 5991] <... write resumed>) = 1 [pid 5990] exit_group(0 [pid 5994] close(3 [pid 5993] exit_group(0 [pid 5992] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5991] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5990] <... exit_group resumed>) = ? [pid 5994] <... close resumed>) = 0 [pid 5993] <... exit_group resumed>) = ? [pid 5991] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5992] <... openat resumed>) = 6 [pid 5991] exit_group(0 [pid 5994] write(1, "executing program\n", 18executing program ) = 18 [pid 5994] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 5993] +++ exited with 0 +++ [pid 5992] write(6, "3", 1 [pid 5991] <... exit_group resumed>) = ? [ 92.188138][ T5992] FAULT_INJECTION: forcing a failure. [ 92.188138][ T5992] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 92.188723][ T5992] [ 92.188732][ T5992] ====================================================== [ 92.188740][ T5992] WARNING: possible circular locking dependency detected [ 92.188754][ T5992] 6.16.0-syzkaller-06574-gd9104cec3e8f #0 Not tainted [ 92.188766][ T5992] ------------------------------------------------------ [ 92.188773][ T5992] syz-executor241/5992 is trying to acquire lock: [ 92.188783][ T5992] ffffffff8e130720 (console_owner){-...}-{0:0}, at: console_flush_all+0x13a/0xc40 [ 92.188840][ T5992] [ 92.188840][ T5992] but task is already holding lock: [ 92.188846][ T5992] ffff8880b8639f58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 92.188900][ T5992] [ 92.188900][ T5992] which lock already depends on the new lock. [ 92.188900][ T5992] [ 92.188907][ T5992] [ 92.188907][ T5992] the existing dependency chain (in reverse order) is: [ 92.188914][ T5992] [ 92.188914][ T5992] -> #4 (&rq->__lock){-.-.}-{2:2}: [ 92.188942][ T5992] lock_acquire+0x120/0x360 [ 92.188970][ T5992] _raw_spin_lock_nested+0x32/0x50 [ 92.188997][ T5992] raw_spin_rq_lock_nested+0x2a/0x140 [ 92.189024][ T5992] task_rq_lock+0xbc/0x470 [ 92.189061][ T5992] cgroup_move_task+0x92/0x2a0 [ 92.189078][ T5992] css_set_move_task+0x658/0x9e0 [ 92.189098][ T5992] cgroup_post_fork+0x1ef/0x790 [ 92.189118][ T5992] copy_process+0x3862/0x3c00 [ 92.189135][ T5992] kernel_clone+0x21e/0x840 [ 92.189152][ T5992] user_mode_thread+0xdd/0x140 [ 92.189171][ T5992] rest_init+0x23/0x300 [ 92.189189][ T5992] start_kernel+0x3a9/0x410 [ 92.189216][ T5992] x86_64_start_reservations+0x24/0x30 [ 92.189238][ T5992] x86_64_start_kernel+0x143/0x1c0 [ 92.189258][ T5992] common_startup_64+0x13e/0x147 [ 92.189282][ T5992] [ 92.189282][ T5992] -> #3 (&p->pi_lock){-.-.}-{2:2}: [ 92.189310][ T5992] lock_acquire+0x120/0x360 [ 92.189335][ T5992] _raw_spin_lock_irqsave+0xa7/0xf0 [ 92.189359][ T5992] try_to_wake_up+0x6e/0x1290 [ 92.189379][ T5992] __wake_up_common_lock+0x137/0x1f0 [ 92.189401][ T5992] tty_port_default_wakeup+0xa2/0xf0 [ 92.189425][ T5992] serial8250_tx_chars+0x72e/0x970 [ 92.189445][ T5992] serial8250_handle_irq+0x633/0xbb0 [ 92.189465][ T5992] serial8250_default_handle_irq+0xbf/0x1e0 [ 92.189490][ T5992] serial8250_interrupt+0x8d/0x160 [ 92.189519][ T5992] __handle_irq_event_percpu+0x289/0x980 [ 92.189540][ T5992] handle_irq_event+0x8b/0x1e0 [ 92.189560][ T5992] handle_edge_irq+0x23b/0x9f0 [ 92.189578][ T5992] __common_interrupt+0x143/0x250 [ 92.189604][ T5992] common_interrupt+0xb6/0xe0 [ 92.189623][ T5992] asm_common_interrupt+0x26/0x40 [ 92.189641][ T5992] pv_native_safe_halt+0x13/0x20 [ 92.189666][ T5992] default_idle+0x13/0x20 [ 92.189682][ T5992] default_idle_call+0x74/0xb0 [ 92.189699][ T5992] do_idle+0x1e8/0x510 [ 92.189726][ T5992] cpu_startup_entry+0x44/0x60 [ 92.189755][ T5992] rest_init+0x2de/0x300 [ 92.189772][ T5992] start_kernel+0x3a9/0x410 [ 92.189799][ T5992] x86_64_start_reservations+0x24/0x30 [ 92.189821][ T5992] x86_64_start_kernel+0x143/0x1c0 [ 92.189841][ T5992] common_startup_64+0x13e/0x147 [ 92.189864][ T5992] [ 92.189864][ T5992] -> #2 (&tty->write_wait){-.-.}-{3:3}: [ 92.189891][ T5992] lock_acquire+0x120/0x360 [ 92.189916][ T5992] _raw_spin_lock_irqsave+0xa7/0xf0 [ 92.189939][ T5992] __wake_up_common_lock+0x2f/0x1f0 [ 92.189961][ T5992] tty_port_default_wakeup+0xa2/0xf0 [ 92.189984][ T5992] serial8250_tx_chars+0x72e/0x970 [ 92.190003][ T5992] serial8250_handle_irq+0x633/0xbb0 [ 92.190023][ T5992] serial8250_default_handle_irq+0xbf/0x1e0 [ 92.190055][ T5992] serial8250_interrupt+0x8d/0x160 [ 92.190084][ T5992] __handle_irq_event_percpu+0x289/0x980 [ 92.190105][ T5992] handle_irq_event+0x8b/0x1e0 [ 92.190125][ T5992] handle_edge_irq+0x23b/0x9f0 [ 92.190142][ T5992] __common_interrupt+0x143/0x250 [ 92.190168][ T5992] common_interrupt+0xb6/0xe0 [ 92.190187][ T5992] asm_common_interrupt+0x26/0x40 [ 92.190205][ T5992] pv_native_safe_halt+0x13/0x20 [ 92.190229][ T5992] default_idle+0x13/0x20 [ 92.190245][ T5992] default_idle_call+0x74/0xb0 [ 92.190262][ T5992] do_idle+0x1e8/0x510 [ 92.190290][ T5992] cpu_startup_entry+0x44/0x60 [ 92.190318][ T5992] rest_init+0x2de/0x300 [ 92.190336][ T5992] start_kernel+0x3a9/0x410 [ 92.190363][ T5992] x86_64_start_reservations+0x24/0x30 [ 92.190385][ T5992] x86_64_start_kernel+0x143/0x1c0 [ 92.190405][ T5992] common_startup_64+0x13e/0x147 [ 92.190428][ T5992] [ 92.190428][ T5992] -> #1 (&port_lock_key){-.-.}-{3:3}: [ 92.190456][ T5992] lock_acquire+0x120/0x360 [ 92.190480][ T5992] _raw_spin_lock_irqsave+0xa7/0xf0 [ 92.190504][ T5992] serial8250_console_write+0x17e/0x1ba0 [ 92.190526][ T5992] console_flush_all+0x728/0xc40 [ 92.190546][ T5992] console_unlock+0xc4/0x270 [ 92.190562][ T5992] vprintk_emit+0x5b7/0x7a0 [ 92.190578][ T5992] _printk+0xcf/0x120 [ 92.190599][ T5992] register_console+0xa8b/0xf90 [ 92.190619][ T5992] univ8250_console_init+0x3a/0x70 [ 92.190640][ T5992] console_init+0x10e/0x430 [ 92.190659][ T5992] start_kernel+0x254/0x410 [ 92.190686][ T5992] x86_64_start_reservations+0x24/0x30 [ 92.190708][ T5992] x86_64_start_kernel+0x143/0x1c0 [ 92.190728][ T5992] common_startup_64+0x13e/0x147 [ 92.190751][ T5992] [ 92.190751][ T5992] -> #0 (console_owner){-...}-{0:0}: [ 92.190778][ T5992] validate_chain+0xb9b/0x2140 [ 92.190794][ T5992] __lock_acquire+0xab9/0xd20 [ 92.190819][ T5992] lock_acquire+0x120/0x360 [ 92.190843][ T5992] console_flush_all+0x6d2/0xc40 [ 92.190863][ T5992] console_unlock+0xc4/0x270 [ 92.190879][ T5992] vprintk_emit+0x5b7/0x7a0 [ 92.190895][ T5992] _printk+0xcf/0x120 [ 92.190916][ T5992] should_fail_ex+0x3f5/0x560 [ 92.190945][ T5992] strncpy_from_user+0x36/0x290 [ 92.190972][ T5992] strncpy_from_user_nofault+0x72/0x150 [ 92.190995][ T5992] bpf_bprintf_prepare+0xbbc/0x13d0 [ 92.191021][ T5992] bpf_trace_printk+0xdb/0x190 [ 92.191043][ T5992] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 92.191058][ T5992] bpf_trace_run2+0x281/0x4b0 [ 92.191081][ T5992] __bpf_trace_contention_begin+0xdc/0x130 [ 92.191098][ T5992] __traceiter_contention_begin+0x77/0xb0 [ 92.191127][ T5992] trace_contention_begin+0x114/0x140 [ 92.191147][ T5992] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 92.191174][ T5992] queued_spin_lock_slowpath+0x43/0x50 [ 92.191197][ T5992] do_raw_spin_lock+0x21f/0x290 [ 92.191217][ T5992] raw_spin_rq_lock_nested+0x2a/0x140 [ 92.191244][ T5992] __schedule+0x32f/0x4d30 [ 92.191269][ T5992] schedule+0x165/0x360 [ 92.191292][ T5992] ptrace_stop+0x575/0x940 [ 92.191316][ T5992] ptrace_notify+0x20f/0x2c0 [ 92.191343][ T5992] syscall_exit_work+0xc6/0x1d0 [ 92.191371][ T5992] do_syscall_64+0x2ad/0x3b0 [ 92.191400][ T5992] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.191419][ T5992] [ 92.191419][ T5992] other info that might help us debug this: [ 92.191419][ T5992] [ 92.191425][ T5992] Chain exists of: [ 92.191425][ T5992] console_owner --> &p->pi_lock --> &rq->__lock [ 92.191425][ T5992] [ 92.191460][ T5992] Possible unsafe locking scenario: [ 92.191460][ T5992] [ 92.191467][ T5992] CPU0 CPU1 [ 92.191473][ T5992] ---- ---- [ 92.191479][ T5992] lock(&rq->__lock); [ 92.191493][ T5992] lock(&p->pi_lock); [ 92.191509][ T5992] lock(&rq->__lock); [ 92.191524][ T5992] lock(console_owner); [ 92.191538][ T5992] [ 92.191538][ T5992] *** DEADLOCK *** [ 92.191538][ T5992] [ 92.191544][ T5992] 4 locks held by syz-executor241/5992: [ 92.191556][ T5992] #0: ffff8880b8639f58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 92.191628][ T5992] #1: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x186/0x4b0 [ 92.191680][ T5992] #2: ffffffff8e130780 (console_lock){+.+.}-{0:0}, at: _printk+0xcf/0x120 [ 92.191736][ T5992] #3: ffffffff8e018050 (console_srcu){....}-{0:0}, at: console_flush_all+0x13a/0xc40 [ 92.191789][ T5992] [ 92.191789][ T5992] stack backtrace: [ 92.191800][ T5992] CPU: 0 UID: 0 PID: 5992 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 92.191824][ T5992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 92.191836][ T5992] Call Trace: [ 92.191843][ T5992] [ 92.191852][ T5992] dump_stack_lvl+0x189/0x250 [ 92.191879][ T5992] ? __pfx_dump_stack_lvl+0x10/0x10 [ 92.191899][ T5992] ? __pfx__printk+0x10/0x10 [ 92.191925][ T5992] ? print_lock_name+0xde/0x100 [ 92.191951][ T5992] print_circular_bug+0x2ee/0x310 [ 92.191973][ T5992] check_noncircular+0x134/0x160 [ 92.191996][ T5992] validate_chain+0xb9b/0x2140 [ 92.192033][ T5992] __lock_acquire+0xab9/0xd20 [ 92.192065][ T5992] ? console_flush_all+0x13a/0xc40 [ 92.192085][ T5992] lock_acquire+0x120/0x360 [ 92.192112][ T5992] ? console_flush_all+0x13a/0xc40 [ 92.192138][ T5992] ? do_raw_spin_unlock+0x122/0x240 [ 92.192160][ T5992] ? console_flush_all+0x13a/0xc40 [ 92.192182][ T5992] console_flush_all+0x6d2/0xc40 [ 92.192203][ T5992] ? console_flush_all+0x13a/0xc40 [ 92.192226][ T5992] ? console_flush_all+0x13a/0xc40 [ 92.192251][ T5992] ? __pfx_console_flush_all+0x10/0x10 [ 92.192274][ T5992] ? strncpy_from_user+0x1bc/0x290 [ 92.192307][ T5992] ? is_printk_cpu_sync_owner+0x32/0x40 [ 92.192334][ T5992] console_unlock+0xc4/0x270 [ 92.192354][ T5992] ? __pfx_console_unlock+0x10/0x10 [ 92.192375][ T5992] ? is_printk_cpu_sync_owner+0x32/0x40 [ 92.192403][ T5992] vprintk_emit+0x5b7/0x7a0 [ 92.192423][ T5992] ? __pfx_vprintk_emit+0x10/0x10 [ 92.192452][ T5992] _printk+0xcf/0x120 [ 92.192475][ T5992] ? __pfx____ratelimit+0x10/0x10 [ 92.192504][ T5992] ? __pfx__printk+0x10/0x10 [ 92.192536][ T5992] should_fail_ex+0x3f5/0x560 [ 92.192569][ T5992] strncpy_from_user+0x36/0x290 [ 92.192600][ T5992] strncpy_from_user_nofault+0x72/0x150 [ 92.192626][ T5992] bpf_bprintf_prepare+0xbbc/0x13d0 [ 92.192661][ T5992] ? __pfx_bpf_bprintf_prepare+0x10/0x10 [ 92.192691][ T5992] ? bpf_trace_printk+0xc1/0x190 [ 92.192711][ T5992] bpf_trace_printk+0xdb/0x190 [ 92.192728][ T5992] ? __lock_acquire+0xab9/0xd20 [ 92.192756][ T5992] ? __pfx_bpf_trace_printk+0x10/0x10 [ 92.192775][ T5992] ? bpf_trace_run2+0x186/0x4b0 [ 92.192807][ T5992] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 92.192824][ T5992] bpf_trace_run2+0x281/0x4b0 [ 92.192848][ T5992] ? __pfx_process_measurement+0x10/0x10 [ 92.192878][ T5992] ? bpf_trace_run2+0x186/0x4b0 [ 92.192903][ T5992] ? __pfx_bpf_trace_run2+0x10/0x10 [ 92.192930][ T5992] ? __bpf_trace_contention_begin+0xcd/0x130 [ 92.192952][ T5992] __bpf_trace_contention_begin+0xdc/0x130 [ 92.192971][ T5992] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 92.192993][ T5992] ? rcu_read_lock_sched_held+0x89/0x100 [ 92.193014][ T5992] ? cpuacct_charge+0x117/0x320 [ 92.193054][ T5992] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 92.193074][ T5992] __traceiter_contention_begin+0x77/0xb0 [ 92.193107][ T5992] trace_contention_begin+0x114/0x140 [ 92.193129][ T5992] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 92.193160][ T5992] ? rcu_qs+0xc4/0x170 [ 92.193188][ T5992] ? __pfx_rcu_qs+0x10/0x10 [ 92.193219][ T5992] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 92.193257][ T5992] queued_spin_lock_slowpath+0x43/0x50 [ 92.193281][ T5992] do_raw_spin_lock+0x21f/0x290 [ 92.193305][ T5992] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 92.193333][ T5992] raw_spin_rq_lock_nested+0x2a/0x140 [ 92.193365][ T5992] __schedule+0x32f/0x4d30 [ 92.193395][ T5992] ? __lock_acquire+0xab9/0xd20 [ 92.193428][ T5992] ? schedule+0x165/0x360 [ 92.193453][ T5992] ? __lock_acquire+0xab9/0xd20 [ 92.193481][ T5992] ? __pfx___schedule+0x10/0x10 [ 92.193514][ T5992] ? schedule+0x91/0x360 [ 92.193541][ T5992] schedule+0x165/0x360 [ 92.193567][ T5992] ptrace_stop+0x575/0x940 [ 92.193599][ T5992] ptrace_notify+0x20f/0x2c0 [ 92.193629][ T5992] ? __pfx_ptrace_notify+0x10/0x10 [ 92.193661][ T5992] ? __pfx_ksys_write+0x10/0x10 [ 92.193693][ T5992] syscall_exit_work+0xc6/0x1d0 [ 92.193723][ T5992] do_syscall_64+0x2ad/0x3b0 [ 92.193751][ T5992] ? lockdep_hardirqs_on+0x9c/0x150 [ 92.193779][ T5992] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.193798][ T5992] ? clear_bhb_loop+0x60/0xb0 [ 92.193821][ T5992] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.193840][ T5992] RIP: 0033:0x7f7d4bd77bd0 [ 92.193856][ T5992] Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d b1 14 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 [ 92.193873][ T5992] RSP: 002b:00007ffca308e228 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 92.193894][ T5992] RAX: 0000000000000001 RBX: 00007ffca308e240 RCX: 00007f7d4bd77bd0 [ 92.193907][ T5992] RDX: 0000000000000001 RSI: 00007ffca308e240 RDI: 0000000000000006 [ 92.193920][ T5992] RBP: 0000000000000006 R08: 0000000000000001 R09: 00007ffca308dfc7 [ 92.193932][ T5992] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 92.193944][ T5992] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 92.193964][ T5992] [ 93.501722][ T5992] CPU: 0 UID: 0 PID: 5992 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 93.501747][ T5992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 93.501758][ T5992] Call Trace: [ 93.501767][ T5992] [ 93.501775][ T5992] dump_stack_lvl+0x189/0x250 [ 93.501797][ T5992] ? __pfx____ratelimit+0x10/0x10 [ 93.501822][ T5992] ? __pfx_dump_stack_lvl+0x10/0x10 [ 93.501839][ T5992] ? __pfx__printk+0x10/0x10 [ 93.501868][ T5992] should_fail_ex+0x414/0x560 [ 93.501898][ T5992] strncpy_from_user+0x36/0x290 [ 93.501925][ T5992] strncpy_from_user_nofault+0x72/0x150 [ 93.501949][ T5992] bpf_bprintf_prepare+0xbbc/0x13d0 [ 93.501978][ T5992] ? __pfx_bpf_bprintf_prepare+0x10/0x10 [ 93.502004][ T5992] ? bpf_trace_printk+0xc1/0x190 [ 93.502022][ T5992] bpf_trace_printk+0xdb/0x190 [ 93.502036][ T5992] ? __lock_acquire+0xab9/0xd20 [ 93.502060][ T5992] ? __pfx_bpf_trace_printk+0x10/0x10 [ 93.502076][ T5992] ? bpf_trace_run2+0x186/0x4b0 [ 93.502110][ T5992] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 93.502126][ T5992] bpf_trace_run2+0x281/0x4b0 [ 93.502147][ T5992] ? __pfx_process_measurement+0x10/0x10 [ 93.502172][ T5992] ? bpf_trace_run2+0x186/0x4b0 [ 93.502193][ T5992] ? __pfx_bpf_trace_run2+0x10/0x10 [ 93.502216][ T5992] ? __bpf_trace_contention_begin+0xcd/0x130 [ 93.502234][ T5992] __bpf_trace_contention_begin+0xdc/0x130 [ 93.502250][ T5992] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 93.502269][ T5992] ? rcu_read_lock_sched_held+0x89/0x100 [ 93.502287][ T5992] ? cpuacct_charge+0x117/0x320 [ 93.502312][ T5992] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 93.502329][ T5992] __traceiter_contention_begin+0x77/0xb0 [ 93.502357][ T5992] trace_contention_begin+0x114/0x140 [ 93.502376][ T5992] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 93.502404][ T5992] ? rcu_qs+0xc4/0x170 [ 93.502429][ T5992] ? __pfx_rcu_qs+0x10/0x10 [ 93.502454][ T5992] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 93.502487][ T5992] queued_spin_lock_slowpath+0x43/0x50 [ 93.502507][ T5992] do_raw_spin_lock+0x21f/0x290 [ 93.502528][ T5992] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 93.502551][ T5992] raw_spin_rq_lock_nested+0x2a/0x140 [ 93.502579][ T5992] __schedule+0x32f/0x4d30 [ 93.502605][ T5992] ? __lock_acquire+0xab9/0xd20 [ 93.502633][ T5992] ? schedule+0x165/0x360 [ 93.502654][ T5992] ? __lock_acquire+0xab9/0xd20 [ 93.502678][ T5992] ? __pfx___schedule+0x10/0x10 [ 93.502706][ T5992] ? schedule+0x91/0x360 [ 93.502728][ T5992] schedule+0x165/0x360 [ 93.502751][ T5992] ptrace_stop+0x575/0x940 [ 93.502778][ T5992] ptrace_notify+0x20f/0x2c0 [ 93.502804][ T5992] ? __pfx_ptrace_notify+0x10/0x10 [ 93.502831][ T5992] ? __pfx_ksys_write+0x10/0x10 [ 93.502860][ T5992] syscall_exit_work+0xc6/0x1d0 [ 93.502886][ T5992] do_syscall_64+0x2ad/0x3b0 [ 93.502912][ T5992] ? lockdep_hardirqs_on+0x9c/0x150 [ 93.502936][ T5992] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.502952][ T5992] ? clear_bhb_loop+0x60/0xb0 [ 93.502971][ T5992] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.502988][ T5992] RIP: 0033:0x7f7d4bd77bd0 [ 93.503003][ T5992] Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d b1 14 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 [ 93.503018][ T5992] RSP: 002b:00007ffca308e228 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 93.503038][ T5992] RAX: 0000000000000001 RBX: 00007ffca308e240 RCX: 00007f7d4bd77bd0 [ 93.503049][ T5992] RDX: 0000000000000001 RSI: 00007ffca308e240 RDI: 0000000000000006 [pid 5994] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5992] <... write resumed>) = 1 [pid 5994] <... bpf resumed>) = 4 [pid 5994] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5994] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5994] write(6, "3", 1) = 1 [pid 5994] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5992] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5990] +++ exited with 0 +++ [pid 5992] <... sendmsg resumed>) = 28 [pid 5992] exit_group(0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5990, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5993, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5992] <... exit_group resumed>) = ? [pid 5992] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5992, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6000 attached [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6000 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6001 [ 93.503060][ T5992] RBP: 0000000000000006 R08: 0000000000000001 R09: 00007ffca308dfc7 [ 93.503071][ T5992] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 93.503080][ T5992] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 93.503102][ T5992] [pid 5994] exit_group(0./strace-static-x86_64: Process 6001 attached [pid 6000] set_robust_list(0x555556b47660, 24 [pid 5991] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5991, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6002 attached [pid 6001] set_robust_list(0x555556b47660, 24 [pid 6000] <... set_robust_list resumed>) = 0 [pid 5994] <... exit_group resumed>) = ? [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6002] set_robust_list(0x555556b47660, 24 [pid 6001] <... set_robust_list resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6002 ./strace-static-x86_64: Process 6003 attached [pid 6002] <... set_robust_list resumed>) = 0 [pid 6000] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6003 [pid 6002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6002] setpgid(0, 0) = 0 [pid 6002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6003] set_robust_list(0x555556b47660, 24 [pid 6002] <... openat resumed>) = 3 [pid 6001] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6000] <... prctl resumed>) = 0 [pid 6003] <... set_robust_list resumed>) = 0 [pid 6002] write(3, "1000", 4 [pid 5994] +++ exited with 0 +++ [pid 6001] <... prctl resumed>) = 0 [pid 6003] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6002] <... write resumed>) = 4 [pid 6000] setpgid(0, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5994, si_uid=0, si_status=0, si_utime=0, si_stime=39 /* 0.39 s */} --- [pid 6001] setpgid(0, 0 [pid 6002] close(3executing program [pid 6003] <... prctl resumed>) = 0 [pid 6002] <... close resumed>) = 0 [pid 6001] <... setpgid resumed>) = 0 [pid 6000] <... setpgid resumed>) = 0 [pid 6002] write(1, "executing program\n", 18) = 18 [pid 6002] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6001] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6003] setpgid(0, 0 [pid 6002] <... bpf resumed>) = 3 [pid 6000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6002] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6001] <... openat resumed>) = 3 [pid 6003] <... setpgid resumed>) = 0 [pid 6001] write(3, "1000", 4 [pid 6000] <... openat resumed>) = 3 [pid 6003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program [pid 6002] <... bpf resumed>) = 4 [pid 6001] <... write resumed>) = 4 [pid 6000] write(3, "1000", 4 [pid 6003] <... openat resumed>) = 3 [pid 6001] close(3 [pid 6000] <... write resumed>) = 4 [pid 6003] write(3, "1000", 4 [pid 6001] <... close resumed>) = 0 [pid 6000] close(3 [pid 6003] <... write resumed>) = 4 [pid 6001] write(1, "executing program\n", 18 [pid 6000] <... close resumed>) = 0 [pid 6003] close(3 [pid 6002] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6001] <... write resumed>) = 18 executing program [pid 6000] write(1, "executing program\n", 18 [pid 6003] <... close resumed>) = 0 [pid 6002] <... socket resumed>) = 5 executing program executing program [pid 6001] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6003] write(1, "executing program\n", 18 [pid 6000] <... write resumed>) = 18 [pid 6002] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6003] <... write resumed>) = 18 [pid 6002] <... openat resumed>) = 6 [pid 6000] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6003] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6002] write(6, "3", 1) = 1 [pid 6000] <... bpf resumed>) = 3 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6004 attached [pid 6003] <... bpf resumed>) = 3 [pid 6002] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6004] set_robust_list(0x555556b47660, 24 [pid 6002] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6000] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6004 [pid 6004] <... set_robust_list resumed>) = 0 [pid 6003] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6002] exit_group(0 [pid 6004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6002] <... exit_group resumed>) = ? [pid 6004] setpgid(0, 0) = 0 [pid 6004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6004] write(3, "1000", 4) = 4 [pid 6004] close(3) = 0 [pid 6004] write(1, "executing program\n", 18) = 18 [pid 6004] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6003] <... bpf resumed>) = 4 [pid 6001] <... bpf resumed>) = 3 [pid 6000] <... bpf resumed>) = 4 [pid 6004] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6003] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6002] +++ exited with 0 +++ [pid 6001] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6000] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6004] <... bpf resumed>) = 4 [pid 6003] <... socket resumed>) = 5 [pid 6001] <... bpf resumed>) = 4 [pid 6000] <... socket resumed>) = 5 [pid 6004] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6003] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6001] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6000] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6002, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6004] <... socket resumed>) = 5 [pid 6003] <... openat resumed>) = 6 [pid 6001] <... socket resumed>) = 5 [pid 6000] <... openat resumed>) = 6 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6004] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6003] write(6, "3", 1 [pid 6001] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6000] write(6, "3", 1./strace-static-x86_64: Process 6005 attached [pid 6004] <... openat resumed>) = 6 [pid 6003] <... write resumed>) = 1 [pid 6004] write(6, "3", 1 [pid 6001] <... openat resumed>) = 6 [pid 6000] <... write resumed>) = 1 [pid 6004] <... write resumed>) = 1 [pid 6003] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6001] write(6, "3", 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6005 [pid 6000] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6004] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6003] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6001] <... write resumed>) = 1 [pid 6004] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6003] exit_group(0 [pid 6001] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6000] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6004] exit_group(0 [pid 6003] <... exit_group resumed>) = ? [pid 6001] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6004] <... exit_group resumed>) = ? [pid 6000] exit_group(0 [pid 6005] set_robust_list(0x555556b47660, 24) = 0 [pid 6001] exit_group(0 [pid 6005] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6001] <... exit_group resumed>) = ? [pid 6000] <... exit_group resumed>) = ? [pid 6005] setpgid(0, 0 [pid 6004] +++ exited with 0 +++ [pid 6005] <... setpgid resumed>) = 0 [pid 6003] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6004, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6003, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6005] <... openat resumed>) = 3 [pid 6005] write(3, "1000", 4 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6006 attached [pid 6005] <... write resumed>) = 4 [pid 6006] set_robust_list(0x555556b47660, 24 [pid 6005] close(3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6006 [pid 6006] <... set_robust_list resumed>) = 0 [pid 6005] <... close resumed>) = 0 [pid 6001] +++ exited with 0 +++ executing program [pid 6006] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6005] write(1, "executing program\n", 18 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6001, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6006] <... prctl resumed>) = 0 [pid 6005] <... write resumed>) = 18 [pid 6000] +++ exited with 0 +++ [pid 6006] setpgid(0, 0 [pid 6005] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6006] <... setpgid resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6000, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 5846] <... restart_syscall resumed>) = 0 [pid 6006] <... openat resumed>) = 3 [pid 6006] write(3, "1000", 4) = 4 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6006] close(3 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6007 ./strace-static-x86_64: Process 6007 attached ./strace-static-x86_64: Process 6008 attached [pid 6006] <... close resumed>) = 0 [pid 6005] <... bpf resumed>) = 3 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6007] set_robust_list(0x555556b47660, 24 [pid 6008] set_robust_list(0x555556b47660, 24 [pid 6006] write(1, "executing program\n", 18 [pid 6005] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6008 executing program [pid 6008] <... set_robust_list resumed>) = 0 [pid 6007] <... set_robust_list resumed>) = 0 [pid 6006] <... write resumed>) = 18 [pid 6008] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6006] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6007] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6008] <... prctl resumed>) = 0 [pid 6007] <... prctl resumed>) = 0 [pid 6005] <... bpf resumed>) = 4 [pid 6008] setpgid(0, 0 [pid 6007] setpgid(0, 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6008] <... setpgid resumed>) = 0 [pid 6007] <... setpgid resumed>) = 0 [pid 6006] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 6009 attached [pid 6008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6006] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6005] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6009 [pid 6009] set_robust_list(0x555556b47660, 24 [pid 6008] <... openat resumed>) = 3 [pid 6005] <... socket resumed>) = 5 [pid 6006] <... bpf resumed>) = 4 [pid 6009] <... set_robust_list resumed>) = 0 [pid 6008] write(3, "1000", 4 [pid 6007] <... openat resumed>) = 3 [pid 6006] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6005] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6009] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6008] <... write resumed>) = 4 [pid 6007] write(3, "1000", 4 [pid 6006] <... socket resumed>) = 5 [pid 6005] <... openat resumed>) = 6 [pid 6009] <... prctl resumed>) = 0 [pid 6008] close(3 [pid 6007] <... write resumed>) = 4 [pid 6006] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6005] write(6, "3", 1 [pid 6009] setpgid(0, 0 [pid 6008] <... close resumed>) = 0 executing program [pid 6007] close(3 [pid 6006] <... openat resumed>) = 6 [pid 6009] <... setpgid resumed>) = 0 [pid 6008] write(1, "executing program\n", 18 [pid 6007] <... close resumed>) = 0 [pid 6006] write(6, "3", 1 [pid 6005] <... write resumed>) = 1 [pid 6009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6008] <... write resumed>) = 18 executing program [pid 6007] write(1, "executing program\n", 18 [pid 6006] <... write resumed>) = 1 [pid 6005] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6009] <... openat resumed>) = 3 [pid 6008] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6007] <... write resumed>) = 18 [pid 6006] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6005] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6009] write(3, "1000", 4 [pid 6008] <... bpf resumed>) = 3 [pid 6007] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6006] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6005] exit_group(0 [pid 6009] <... write resumed>) = 4 [pid 6009] close(3 [pid 6007] <... bpf resumed>) = 3 [pid 6006] exit_group(0 [pid 6005] <... exit_group resumed>) = ? [pid 6009] <... close resumed>) = 0 executing program [pid 6009] write(1, "executing program\n", 18 [pid 6006] <... exit_group resumed>) = ? [pid 6009] <... write resumed>) = 18 [pid 6008] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6007] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6009] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6008] <... bpf resumed>) = 4 [pid 6007] <... bpf resumed>) = 4 [pid 6009] <... bpf resumed>) = 3 [pid 6006] +++ exited with 0 +++ [pid 6009] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6008] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6005] +++ exited with 0 +++ [pid 6009] <... bpf resumed>) = 4 [pid 6008] <... socket resumed>) = 5 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6006, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6009] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6008] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6005, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6009] <... socket resumed>) = 5 [pid 6008] <... openat resumed>) = 6 [pid 6007] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6009] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6008] write(6, "3", 1 [pid 6007] <... socket resumed>) = 5 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6009] <... openat resumed>) = 6 [pid 6008] <... write resumed>) = 1 [pid 6007] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6009] write(6, "3", 1 [pid 6008] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6009] <... write resumed>) = 1 [pid 6007] <... openat resumed>) = 6 [pid 6009] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6008] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6007] write(6, "3", 1 [pid 6009] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6008] exit_group(0 [pid 6007] <... write resumed>) = 1 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6009] exit_group(0 [pid 6008] <... exit_group resumed>) = ? [pid 6007] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6009] <... exit_group resumed>) = ? [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6010 attached [pid 6010] set_robust_list(0x555556b47660, 24) = 0 [pid 6010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6009] +++ exited with 0 +++ [pid 6007] <... sendmsg resumed>) = 28 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6010 [pid 6010] setpgid(0, 0) = 0 [pid 6010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6011 attached ) = 3 [pid 6011] set_robust_list(0x555556b47660, 24) = 0 [pid 6007] exit_group(0 [pid 6011] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6011 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6009, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6011] <... prctl resumed>) = 0 [pid 6010] write(3, "1000", 4 [pid 6011] setpgid(0, 0 [pid 6010] <... write resumed>) = 4 [pid 6008] +++ exited with 0 +++ [pid 6011] <... setpgid resumed>) = 0 [pid 6010] close(3 [pid 6007] <... exit_group resumed>) = ? [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6008, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6011] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6010] <... close resumed>) = 0 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6011] <... openat resumed>) = 3 executing program [pid 6010] write(1, "executing program\n", 18) = 18 [pid 6011] write(3, "1000", 4 [pid 6010] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6011] <... write resumed>) = 4 [pid 6010] <... bpf resumed>) = 3 [pid 6011] close(3 [pid 6007] +++ exited with 0 +++ [pid 6011] <... close resumed>) = 0 [pid 6010] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6007, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6011] write(1, "executing program\n", 18 [pid 6010] <... bpf resumed>) = 4 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 executing program [pid 6011] <... write resumed>) = 18 [pid 6011] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6010] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6010] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6011] <... bpf resumed>) = 3 [pid 6010] <... openat resumed>) = 6 ./strace-static-x86_64: Process 6012 attached [pid 6010] write(6, "3", 1) = 1 [pid 6010] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 28 ./strace-static-x86_64: Process 6013 attached [pid 6012] set_robust_list(0x555556b47660, 24 [pid 6011] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6010] exit_group(0./strace-static-x86_64: Process 6014 attached [pid 6012] <... set_robust_list resumed>) = 0 [pid 6014] set_robust_list(0x555556b47660, 24 [pid 6013] set_robust_list(0x555556b47660, 24 [pid 6011] <... bpf resumed>) = 4 [pid 6010] <... exit_group resumed>) = ? [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6012 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6013 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6014 [pid 6014] <... set_robust_list resumed>) = 0 [pid 6013] <... set_robust_list resumed>) = 0 [pid 6012] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6011] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6014] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6013] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6012] <... prctl resumed>) = 0 [pid 6011] <... socket resumed>) = 5 [pid 6014] <... prctl resumed>) = 0 [pid 6013] <... prctl resumed>) = 0 [pid 6012] setpgid(0, 0 [pid 6011] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6014] setpgid(0, 0 [pid 6013] setpgid(0, 0 [pid 6012] <... setpgid resumed>) = 0 [pid 6014] <... setpgid resumed>) = 0 [pid 6013] <... setpgid resumed>) = 0 [pid 6011] <... openat resumed>) = 6 [pid 6014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6013] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6011] write(6, "3", 1 [pid 6014] <... openat resumed>) = 3 [pid 6012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6014] write(3, "1000", 4 [pid 6013] <... openat resumed>) = 3 [pid 6011] <... write resumed>) = 1 [pid 6014] <... write resumed>) = 4 [pid 6013] write(3, "1000", 4 [pid 6012] <... openat resumed>) = 3 [pid 6011] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6010] +++ exited with 0 +++ [pid 6014] close(3 [pid 6013] <... write resumed>) = 4 [pid 6012] write(3, "1000", 4 [pid 6011] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6014] <... close resumed>) = 0 [pid 6013] close(3 [pid 6012] <... write resumed>) = 4 [pid 6014] write(1, "executing program\n", 18executing program [pid 6013] <... close resumed>) = 0 [pid 6011] exit_group(0 [pid 6014] <... write resumed>) = 18 [pid 6013] write(1, "executing program\n", 18executing program [pid 6012] close(3 [pid 6011] <... exit_group resumed>) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6010, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6014] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6013] <... write resumed>) = 18 [pid 6012] <... close resumed>) = 0 [pid 5849] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6014] <... bpf resumed>) = 3 [pid 6013] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6012] write(1, "executing program\n", 18 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program [pid 6014] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6013] <... bpf resumed>) = 3 [pid 6012] <... write resumed>) = 18 [pid 6012] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6015 ./strace-static-x86_64: Process 6015 attached [pid 6015] set_robust_list(0x555556b47660, 24) = 0 [pid 6013] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6012] <... bpf resumed>) = 3 [pid 6014] <... bpf resumed>) = 4 [pid 6015] setpgid(0, 0 [pid 6013] <... bpf resumed>) = 4 [pid 6012] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6011] +++ exited with 0 +++ [pid 6014] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6013] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6012] <... bpf resumed>) = 4 [pid 6015] <... setpgid resumed>) = 0 [pid 6014] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6013] <... socket resumed>) = 5 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6011, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6014] <... openat resumed>) = 6 [pid 6013] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6012] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6014] write(6, "3", 1 [pid 6013] <... openat resumed>) = 6 [pid 6012] <... socket resumed>) = 5 [pid 6015] <... openat resumed>) = 3 [pid 6014] <... write resumed>) = 1 [pid 6013] write(6, "3", 1 [pid 6012] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6014] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6013] <... write resumed>) = 1 [pid 6012] <... openat resumed>) = 6 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6015] write(3, "1000", 4 [pid 6014] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6013] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6015] <... write resumed>) = 4 [pid 6012] write(6, "3", 1 [pid 6014] exit_group(0 [pid 6013] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6012] <... write resumed>) = 1 ./strace-static-x86_64: Process 6016 attached [pid 6014] <... exit_group resumed>) = ? [pid 6013] exit_group(0 [pid 6012] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6016] set_robust_list(0x555556b47660, 24executing program [pid 6013] <... exit_group resumed>) = ? [pid 6015] close(3) = 0 [pid 6015] write(1, "executing program\n", 18) = 18 [pid 6015] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6013] +++ exited with 0 +++ [pid 6012] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6016] <... set_robust_list resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6016 [pid 6016] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6013, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6012] exit_group(0 [pid 6016] <... prctl resumed>) = 0 [pid 6016] setpgid(0, 0 [pid 6012] <... exit_group resumed>) = ? [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6016] <... setpgid resumed>) = 0 [pid 6016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6017 attached ) = 3 [pid 6015] <... bpf resumed>) = 3 [pid 6014] +++ exited with 0 +++ [pid 6012] +++ exited with 0 +++ [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6017 [pid 6017] set_robust_list(0x555556b47660, 24 [pid 6016] write(3, "1000", 4 [pid 6015] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6012, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6017] <... set_robust_list resumed>) = 0 [pid 6016] <... write resumed>) = 4 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6014, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6016] close(3) = 0 executing program [pid 6017] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6016] write(1, "executing program\n", 18 [pid 6017] <... prctl resumed>) = 0 [pid 6016] <... write resumed>) = 18 [pid 6017] setpgid(0, 0 [pid 6016] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6017] <... setpgid resumed>) = 0 [pid 6015] <... bpf resumed>) = 4 [pid 6017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6015] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6016] <... bpf resumed>) = 3 [pid 6015] <... socket resumed>) = 5 ./strace-static-x86_64: Process 6018 attached [pid 6015] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6019 attached ) = 6 [pid 6019] set_robust_list(0x555556b47660, 24 [pid 6018] set_robust_list(0x555556b47660, 24 [pid 6017] <... openat resumed>) = 3 [pid 6016] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6019 [pid 6018] <... set_robust_list resumed>) = 0 [pid 6017] write(3, "1000", 4 [pid 6015] write(6, "3", 1 [pid 6019] <... set_robust_list resumed>) = 0 [pid 6018] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6017] <... write resumed>) = 4 [pid 6018] <... prctl resumed>) = 0 [pid 6016] <... bpf resumed>) = 4 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6018 [pid 6018] setpgid(0, 0 [pid 6017] close(3 [pid 6016] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6019] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6018] <... setpgid resumed>) = 0 [pid 6017] <... close resumed>) = 0 [pid 6015] <... write resumed>) = 1 [pid 6019] <... prctl resumed>) = 0 [pid 6017] write(1, "executing program\n", 18executing program [pid 6016] <... socket resumed>) = 5 [pid 6017] <... write resumed>) = 18 [pid 6019] setpgid(0, 0 [pid 6018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6016] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6015] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6019] <... setpgid resumed>) = 0 [pid 6017] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6016] <... openat resumed>) = 6 [pid 6015] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6018] <... openat resumed>) = 3 [pid 6015] exit_group(0 [pid 6019] <... openat resumed>) = 3 [pid 6016] write(6, "3", 1 [pid 6015] <... exit_group resumed>) = ? [pid 6018] write(3, "1000", 4) = 4 [pid 6017] <... bpf resumed>) = 3 [pid 6018] close(3) = 0 [pid 6018] write(1, "executing program\n", 18 [pid 6016] <... write resumed>) = 1 executing program [pid 6019] write(3, "1000", 4 [pid 6018] <... write resumed>) = 18 [pid 6017] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6016] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6019] <... write resumed>) = 4 [pid 6016] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6019] close(3) = 0 [pid 6018] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6016] exit_group(0 [pid 6019] write(1, "executing program\n", 18executing program [pid 6016] <... exit_group resumed>) = ? [pid 6019] <... write resumed>) = 18 [pid 6015] +++ exited with 0 +++ [pid 6019] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6017] <... bpf resumed>) = 4 [pid 6019] <... bpf resumed>) = 3 [pid 6017] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6016] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6015, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6018] <... bpf resumed>) = 3 [pid 6018] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6019] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6017] <... socket resumed>) = 5 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6016, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6019] <... bpf resumed>) = 4 [pid 6018] <... bpf resumed>) = 4 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6017] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6019] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6018] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6019] <... socket resumed>) = 5 [pid 6018] <... socket resumed>) = 5 [pid 6019] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6018] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6017] <... openat resumed>) = 6 [pid 6019] <... openat resumed>) = 6 [pid 6018] <... openat resumed>) = 6 ./strace-static-x86_64: Process 6020 attached [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6019] write(6, "3", 1 [pid 6018] write(6, "3", 1 [pid 6019] <... write resumed>) = 1 [pid 6018] <... write resumed>) = 1 [pid 6019] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6018] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6019] <... sendmsg resumed>) = 28 [pid 6018] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) ./strace-static-x86_64: Process 6021 attached [pid 6019] exit_group(0 [pid 6018] exit_group(0 [pid 6021] set_robust_list(0x555556b47660, 24 [pid 6020] set_robust_list(0x555556b47660, 24 [pid 6019] <... exit_group resumed>) = ? [pid 6018] <... exit_group resumed>) = ? [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6020 [pid 6021] <... set_robust_list resumed>) = 0 [pid 6020] <... set_robust_list resumed>) = 0 [pid 6017] write(6, "3", 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6021 [pid 6021] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6020] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6017] <... write resumed>) = 1 [pid 6021] <... prctl resumed>) = 0 [pid 6020] <... prctl resumed>) = 0 [pid 6018] +++ exited with 0 +++ [pid 6017] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6021] setpgid(0, 0 [pid 6020] setpgid(0, 0 [pid 6019] +++ exited with 0 +++ [pid 6017] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6018, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6021] <... setpgid resumed>) = 0 [pid 6020] <... setpgid resumed>) = 0 [pid 6017] exit_group(0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6019, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6017] <... exit_group resumed>) = ? [pid 5845] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6021] <... openat resumed>) = 3 [pid 6020] <... openat resumed>) = 3 [pid 6021] write(3, "1000", 4 [pid 6020] write(3, "1000", 4 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6021] <... write resumed>) = 4 [pid 6020] <... write resumed>) = 4 [pid 6020] close(3./strace-static-x86_64: Process 6022 attached [pid 6021] close(3 [pid 6020] <... close resumed>) = 0 [pid 6022] set_robust_list(0x555556b47660, 24 [pid 6021] <... close resumed>) = 0 [pid 6020] write(1, "executing program\n", 18 [pid 6022] <... set_robust_list resumed>) = 0 [pid 6021] write(1, "executing program\n", 18executing program [pid 6017] +++ exited with 0 +++ [pid 5852] <... restart_syscall resumed>) = 0 executing program [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6022 [pid 6021] <... write resumed>) = 18 [pid 6020] <... write resumed>) = 18 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6017, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6021] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6020] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6020] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6022] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6021] <... bpf resumed>) = 3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6022] <... prctl resumed>) = 0 [pid 6020] <... bpf resumed>) = 4 [pid 6022] setpgid(0, 0 [pid 6020] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 6023 attached [pid 6022] <... setpgid resumed>) = 0 [pid 6020] <... socket resumed>) = 5 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6021] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6023] set_robust_list(0x555556b47660, 24 [pid 6022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6020] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6021] <... bpf resumed>) = 4 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6023 [pid 6023] <... set_robust_list resumed>) = 0 [pid 6023] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6022] <... openat resumed>) = 3 [pid 6021] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6022] write(3, "1000", 4 [pid 6020] <... openat resumed>) = 6 [pid 6022] <... write resumed>) = 4 [pid 6020] write(6, "3", 1 [pid 6022] close(3 [pid 6020] <... write resumed>) = 1 [pid 6023] <... prctl resumed>) = 0 [pid 6021] <... socket resumed>) = 5 ./strace-static-x86_64: Process 6024 attached [pid 6022] <... close resumed>) = 0 [pid 6020] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6024] set_robust_list(0x555556b47660, 24 [pid 6022] write(1, "executing program\n", 18 [pid 6020] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6023] setpgid(0, 0 [pid 6021] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6024 [pid 6023] <... setpgid resumed>) = 0 [pid 6021] <... openat resumed>) = 6 [pid 6023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program [pid 6021] write(6, "3", 1 [pid 6024] <... set_robust_list resumed>) = 0 [pid 6023] <... openat resumed>) = 3 [pid 6022] <... write resumed>) = 18 [pid 6021] <... write resumed>) = 1 [pid 6020] exit_group(0 [pid 6023] write(3, "1000", 4 [pid 6021] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6023] <... write resumed>) = 4 [pid 6021] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6023] close(3 [pid 6021] exit_group(0 [pid 6024] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6023] <... close resumed>) = 0 [pid 6022] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6021] <... exit_group resumed>) = ? [pid 6020] <... exit_group resumed>) = ? [pid 6024] <... prctl resumed>) = 0 [pid 6023] write(1, "executing program\n", 18executing program [pid 6024] setpgid(0, 0 [pid 6023] <... write resumed>) = 18 [pid 6022] <... bpf resumed>) = 3 [pid 6021] +++ exited with 0 +++ [pid 6020] +++ exited with 0 +++ [pid 6024] <... setpgid resumed>) = 0 [pid 6023] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6022] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6021, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6020, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6024] <... openat resumed>) = 3 [pid 6023] <... bpf resumed>) = 3 [pid 6022] <... bpf resumed>) = 4 [pid 6023] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6022] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 6025 attached [pid 6024] write(3, "1000", 4 [pid 6023] <... bpf resumed>) = 4 [pid 6022] <... socket resumed>) = 5 [pid 6025] set_robust_list(0x555556b47660, 24 [pid 6024] <... write resumed>) = 4 [pid 6025] <... set_robust_list resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6025 [pid 6024] close(3 [pid 6025] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6024] <... close resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6025] <... prctl resumed>) = 0 [pid 6024] write(1, "executing program\n", 18 [pid 6023] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6022] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWRexecuting program [pid 6025] setpgid(0, 0 [pid 6024] <... write resumed>) = 18 [pid 6023] <... socket resumed>) = 5 [pid 6022] <... openat resumed>) = 6 ./strace-static-x86_64: Process 6026 attached [pid 6025] <... setpgid resumed>) = 0 [pid 6024] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6026] set_robust_list(0x555556b47660, 24 [pid 6025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6023] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6022] write(6, "3", 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6026 [pid 6025] <... openat resumed>) = 3 [pid 6026] <... set_robust_list resumed>) = 0 [pid 6025] write(3, "1000", 4 [pid 6024] <... bpf resumed>) = 3 [pid 6023] <... openat resumed>) = 6 [pid 6022] <... write resumed>) = 1 [pid 6025] <... write resumed>) = 4 [pid 6025] close(3) = 0 [pid 6024] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6025] write(1, "executing program\n", 18executing program ) = 18 [pid 6024] <... bpf resumed>) = 4 [pid 6025] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6026] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6024] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6023] write(6, "3", 1 [pid 6022] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6024] <... socket resumed>) = 5 [pid 6026] <... prctl resumed>) = 0 [pid 6024] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6023] <... write resumed>) = 1 [pid 6022] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6026] setpgid(0, 0 [pid 6025] <... bpf resumed>) = 3 [pid 6024] <... openat resumed>) = 6 [pid 6022] exit_group(0 [pid 6026] <... setpgid resumed>) = 0 [pid 6025] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6023] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6025] <... bpf resumed>) = 4 [pid 6024] write(6, "3", 1 [pid 6023] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6022] <... exit_group resumed>) = ? [pid 6026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6025] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6024] <... write resumed>) = 1 [pid 6023] exit_group(0 [pid 6025] <... socket resumed>) = 5 [pid 6023] <... exit_group resumed>) = ? [pid 6026] <... openat resumed>) = 3 [pid 6025] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6025] write(6, "3", 1 [pid 6024] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6026] write(3, "1000", 4 [pid 6025] <... write resumed>) = 1 [pid 6023] +++ exited with 0 +++ [pid 6022] +++ exited with 0 +++ [pid 6025] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6024] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6023, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6022, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6025] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6025] exit_group(0) = ? [pid 6026] <... write resumed>) = 4 [pid 6024] exit_group(0 [pid 6026] close(3 [pid 6024] <... exit_group resumed>) = ? [pid 6026] <... close resumed>) = 0 [pid 6025] +++ exited with 0 +++ [pid 5845] <... restart_syscall resumed>) = 0 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6025, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6026] write(1, "executing program\n", 18 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program ./strace-static-x86_64: Process 6027 attached [pid 6026] <... write resumed>) = 18 [pid 6024] +++ exited with 0 +++ [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6024, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6027 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6028 ./strace-static-x86_64: Process 6028 attached [pid 6027] set_robust_list(0x555556b47660, 24 [pid 6026] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6028] set_robust_list(0x555556b47660, 24 [pid 6027] <... set_robust_list resumed>) = 0 [pid 6028] <... set_robust_list resumed>) = 0 [pid 6028] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6027] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6026] <... bpf resumed>) = 3 [pid 6027] <... prctl resumed>) = 0 [pid 6028] <... prctl resumed>) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6028] setpgid(0, 0 [pid 6027] setpgid(0, 0 [pid 6026] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6028] <... setpgid resumed>) = 0 [pid 6027] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 6029 attached ./strace-static-x86_64: Process 6030 attached [pid 6029] set_robust_list(0x555556b47660, 24 [pid 6028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6030 [pid 6029] <... set_robust_list resumed>) = 0 [pid 6027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6029] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6028] <... openat resumed>) = 3 [pid 6027] <... openat resumed>) = 3 [pid 6030] set_robust_list(0x555556b47660, 24 [pid 6029] <... prctl resumed>) = 0 [pid 6029] setpgid(0, 0) = 0 [pid 6030] <... set_robust_list resumed>) = 0 [pid 6028] write(3, "1000", 4 [pid 6027] write(3, "1000", 4 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6029 executing program executing program executing program [pid 6030] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6028] <... write resumed>) = 4 [pid 6027] <... write resumed>) = 4 [pid 6029] <... openat resumed>) = 3 [pid 6029] write(3, "1000", 4) = 4 [pid 6029] close(3) = 0 [pid 6029] write(1, "executing program\n", 18 [pid 6026] <... bpf resumed>) = 4 [pid 6030] <... prctl resumed>) = 0 [pid 6028] close(3 [pid 6027] close(3 [pid 6028] <... close resumed>) = 0 [pid 6027] <... close resumed>) = 0 [pid 6030] setpgid(0, 0 [pid 6028] write(1, "executing program\n", 18 [pid 6026] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6030] <... setpgid resumed>) = 0 [pid 6028] <... write resumed>) = 18 [pid 6027] write(1, "executing program\n", 18 [pid 6026] <... socket resumed>) = 5 [pid 6030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6029] <... write resumed>) = 18 [pid 6027] <... write resumed>) = 18 [pid 6026] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6028] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6030] <... openat resumed>) = 3 [pid 6027] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6030] write(3, "1000", 4 [pid 6026] <... openat resumed>) = 6 [pid 6029] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6026] write(6, "3", 1 [pid 6030] <... write resumed>) = 4 [pid 6026] <... write resumed>) = 1 executing program [pid 6026] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6030] close(3 [pid 6027] <... bpf resumed>) = 3 [pid 6030] <... close resumed>) = 0 [pid 6028] <... bpf resumed>) = 3 [pid 6026] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6030] write(1, "executing program\n", 18 [pid 6029] <... bpf resumed>) = 3 [pid 6030] <... write resumed>) = 18 [pid 6026] exit_group(0 [pid 6029] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6028] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6030] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6027] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6026] <... exit_group resumed>) = ? [pid 6029] <... bpf resumed>) = 4 [pid 6030] <... bpf resumed>) = 3 [pid 6029] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6028] <... bpf resumed>) = 4 [pid 6027] <... bpf resumed>) = 4 [pid 6030] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6029] <... socket resumed>) = 5 [pid 6028] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6027] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6026] +++ exited with 0 +++ [pid 6030] <... bpf resumed>) = 4 [pid 6029] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6028] <... socket resumed>) = 5 [pid 6027] <... socket resumed>) = 5 [pid 6030] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6029] <... openat resumed>) = 6 [pid 6028] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6027] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6026, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6030] <... socket resumed>) = 5 [pid 6029] write(6, "3", 1 [pid 6028] <... openat resumed>) = 6 [pid 6027] <... openat resumed>) = 6 [pid 6030] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6029] <... write resumed>) = 1 [pid 6028] write(6, "3", 1 [pid 6027] write(6, "3", 1 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6030] <... openat resumed>) = 6 [pid 6029] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6028] <... write resumed>) = 1 [pid 6027] <... write resumed>) = 1 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6030] write(6, "3", 1 [pid 6029] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6028] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6027] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6030] <... write resumed>) = 1 [pid 6029] exit_group(0 [pid 6028] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6027] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6030] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6029] <... exit_group resumed>) = ? [pid 6028] exit_group(0 [pid 6027] exit_group(0 [pid 6030] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6028] <... exit_group resumed>) = ? [pid 6027] <... exit_group resumed>) = ? [pid 6029] +++ exited with 0 +++ [pid 6030] exit_group(0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6029, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 6031 attached [pid 6030] <... exit_group resumed>) = ? [pid 6027] +++ exited with 0 +++ [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6031 [pid 5846] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6031] set_robust_list(0x555556b47660, 24) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6027, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6031] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6031] <... prctl resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6031] setpgid(0, 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6030] +++ exited with 0 +++ [pid 6028] +++ exited with 0 +++ ./strace-static-x86_64: Process 6032 attached [pid 6031] <... setpgid resumed>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6030, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6028, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6032 [pid 6032] set_robust_list(0x555556b47660, 24) = 0 ./strace-static-x86_64: Process 6033 attached [pid 6031] <... openat resumed>) = 3 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6033 [pid 6032] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6031] write(3, "1000", 4) = 4 [pid 6033] set_robust_list(0x555556b47660, 24 [pid 6032] <... prctl resumed>) = 0 [pid 6031] close(3executing program [pid 6033] <... set_robust_list resumed>) = 0 [pid 6032] setpgid(0, 0 [pid 6031] <... close resumed>) = 0 [pid 6032] <... setpgid resumed>) = 0 [pid 6031] write(1, "executing program\n", 18) = 18 [pid 6032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6031] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6033] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6032] <... openat resumed>) = 3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6034 attached [pid 6031] <... bpf resumed>) = 3 [pid 6031] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 6035 attached [pid 6034] set_robust_list(0x555556b47660, 24 [pid 6033] <... prctl resumed>) = 0 [pid 6032] write(3, "1000", 4 [pid 6035] set_robust_list(0x555556b47660, 24 [pid 6034] <... set_robust_list resumed>) = 0 [pid 6035] <... set_robust_list resumed>) = 0 [pid 6034] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6033] setpgid(0, 0 [pid 6032] <... write resumed>) = 4 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6034 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6035 [pid 6035] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6034] <... prctl resumed>) = 0 [pid 6033] <... setpgid resumed>) = 0 [pid 6032] close(3 [pid 6031] <... bpf resumed>) = 4 [pid 6035] <... prctl resumed>) = 0 [pid 6034] setpgid(0, 0 [pid 6032] <... close resumed>) = 0 [pid 6034] <... setpgid resumed>) = 0 [pid 6033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6032] write(1, "executing program\n", 18 [pid 6031] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERICexecuting program [pid 6035] setpgid(0, 0 [pid 6034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6033] <... openat resumed>) = 3 [pid 6032] <... write resumed>) = 18 [pid 6035] <... setpgid resumed>) = 0 [pid 6034] <... openat resumed>) = 3 [pid 6035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6034] write(3, "1000", 4 [pid 6035] write(3, "1000", 4 [pid 6034] <... write resumed>) = 4 [pid 6035] <... write resumed>) = 4 [pid 6034] close(3 [pid 6035] close(3 [pid 6034] <... close resumed>) = 0 [pid 6035] <... close resumed>) = 0 [pid 6035] write(1, "executing program\n", 18 [pid 6034] write(1, "executing program\n", 18executing program executing program [pid 6035] <... write resumed>) = 18 [pid 6034] <... write resumed>) = 18 [pid 6035] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6034] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6031] <... socket resumed>) = 5 [pid 6033] write(3, "1000", 4 [pid 6032] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6031] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6035] <... bpf resumed>) = 3 [pid 6034] <... bpf resumed>) = 3 [pid 6033] <... write resumed>) = 4 [pid 6032] <... bpf resumed>) = 3 [pid 6034] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6035] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6033] close(3 [pid 6032] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6031] <... openat resumed>) = 6 [pid 6034] <... bpf resumed>) = 4 [pid 6035] <... bpf resumed>) = 4 [pid 6034] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6033] <... close resumed>) = 0 [pid 6032] <... bpf resumed>) = 4 [pid 6031] write(6, "3", 1 [pid 6035] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6034] <... socket resumed>) = 5 executing program [pid 6033] write(1, "executing program\n", 18 [pid 6032] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6031] <... write resumed>) = 1 [pid 6035] <... socket resumed>) = 5 [pid 6034] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6033] <... write resumed>) = 18 [pid 6032] <... socket resumed>) = 5 [pid 6031] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6035] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6034] <... openat resumed>) = 6 [pid 6033] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6032] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6031] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6035] <... openat resumed>) = 6 [pid 6034] write(6, "3", 1 [pid 6033] <... bpf resumed>) = 3 [pid 6035] write(6, "3", 1 [pid 6034] <... write resumed>) = 1 [pid 6033] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6031] exit_group(0 [pid 6035] <... write resumed>) = 1 [pid 6034] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6033] <... bpf resumed>) = 4 [pid 6032] <... openat resumed>) = 6 [pid 6031] <... exit_group resumed>) = ? [pid 6035] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6034] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6033] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6032] write(6, "3", 1 [pid 6031] +++ exited with 0 +++ [pid 6035] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6034] exit_group(0 [pid 6033] <... socket resumed>) = 5 [pid 6032] <... write resumed>) = 1 [pid 6035] exit_group(0 [pid 6034] <... exit_group resumed>) = ? [pid 6033] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6035] <... exit_group resumed>) = ? [pid 6032] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6031, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6035] +++ exited with 0 +++ [pid 6034] +++ exited with 0 +++ [pid 6033] <... openat resumed>) = 6 [pid 6032] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6033] write(6, "3", 1) = 1 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6034, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6033] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6033] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6032] exit_group(0 [pid 5849] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 6036 attached [pid 6033] exit_group(0 [pid 6032] <... exit_group resumed>) = ? [pid 6036] set_robust_list(0x555556b47660, 24 [pid 6033] <... exit_group resumed>) = ? [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6036 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6035, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6036] <... set_robust_list resumed>) = 0 [pid 6036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6036] setpgid(0, 0) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6036] write(3, "1000", 4) = 4 [pid 6036] close(3./strace-static-x86_64: Process 6037 attached ) = 0 [pid 6033] +++ exited with 0 +++ [pid 6032] +++ exited with 0 +++ [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6037] set_robust_list(0x555556b47660, 24) = 0 executing program [pid 6036] write(1, "executing program\n", 18 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6032, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6037] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6036] <... write resumed>) = 18 [pid 6036] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6038 attached [pid 6037] <... prctl resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6037 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6033, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6038] set_robust_list(0x555556b47660, 24) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6038 [pid 6037] setpgid(0, 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6037] <... setpgid resumed>) = 0 [pid 6038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 6039 attached [pid 6037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6036] <... bpf resumed>) = 3 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6039 [pid 6039] set_robust_list(0x555556b47660, 24) = 0 [pid 6038] setpgid(0, 0 [pid 6039] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6038] <... setpgid resumed>) = 0 [pid 6037] <... openat resumed>) = 3 [pid 6036] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6039] <... prctl resumed>) = 0 [pid 6039] setpgid(0, 0 [pid 6038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6039] <... setpgid resumed>) = 0 [pid 6039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6038] <... openat resumed>) = 3 [pid 6039] <... openat resumed>) = 3 [pid 6038] write(3, "1000", 4 [pid 6037] write(3, "1000", 4 [pid 6038] <... write resumed>) = 4 [pid 6037] <... write resumed>) = 4 [pid 6036] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 6040 attached [pid 6038] close(3 [pid 6037] close(3 [pid 6039] write(3, "1000", 4) = 4 [pid 6039] close(3) = 0 executing program [pid 6039] write(1, "executing program\n", 18) = 18 [pid 6039] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6040] set_robust_list(0x555556b47660, 24 [pid 6038] <... close resumed>) = 0 [pid 6037] <... close resumed>) = 0 [pid 6036] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6040 [pid 6040] <... set_robust_list resumed>) = 0 executing program executing program [pid 6039] <... bpf resumed>) = 3 [pid 6038] write(1, "executing program\n", 18 [pid 6037] write(1, "executing program\n", 18 [pid 6036] <... socket resumed>) = 5 [pid 6040] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6038] <... write resumed>) = 18 [pid 6037] <... write resumed>) = 18 [pid 6036] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6039] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6040] <... prctl resumed>) = 0 [pid 6039] <... bpf resumed>) = 4 [pid 6038] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6037] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6036] <... openat resumed>) = 6 [pid 6040] setpgid(0, 0 [pid 6039] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6036] write(6, "3", 1 [pid 6039] <... socket resumed>) = 5 [pid 6040] <... setpgid resumed>) = 0 [pid 6039] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6036] <... write resumed>) = 1 [pid 6039] <... openat resumed>) = 6 [pid 6039] write(6, "3", 1 [pid 6038] <... bpf resumed>) = 3 [pid 6039] <... write resumed>) = 1 [pid 6039] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6037] <... bpf resumed>) = 3 [pid 6039] exit_group(0) = ? [pid 6040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6038] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6037] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6036] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6040] <... openat resumed>) = 3 [pid 6039] +++ exited with 0 +++ [pid 6036] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6039, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6040] write(3, "1000", 4 [pid 6036] exit_group(0 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6040] <... write resumed>) = 4 [pid 6036] <... exit_group resumed>) = ? [pid 6038] <... bpf resumed>) = 4 [pid 6040] close(3 [pid 6037] <... bpf resumed>) = 4 [pid 6038] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6037] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6038] <... socket resumed>) = 5 [pid 6037] <... socket resumed>) = 5 [pid 6038] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] <... restart_syscall resumed>) = 0 [pid 6037] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6038] <... openat resumed>) = 6 [pid 6037] <... openat resumed>) = 6 [pid 6040] <... close resumed>) = 0 [pid 6036] +++ exited with 0 +++ [pid 6040] write(1, "executing program\n", 18 executing program [pid 6038] write(6, "3", 1 [pid 6037] write(6, "3", 1 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6036, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6040] <... write resumed>) = 18 [pid 6038] <... write resumed>) = 1 [pid 6040] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6038] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6037] <... write resumed>) = 1 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6041 attached [pid 6038] <... sendmsg resumed>) = 28 [pid 6040] <... bpf resumed>) = 3 [pid 6037] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6038] exit_group(0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6041] set_robust_list(0x555556b47660, 24 [pid 6040] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6037] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) ./strace-static-x86_64: Process 6042 attached [pid 6041] <... set_robust_list resumed>) = 0 [pid 6040] <... bpf resumed>) = 4 [pid 6038] <... exit_group resumed>) = ? [pid 6037] exit_group(0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6041 [pid 6037] <... exit_group resumed>) = ? [pid 6042] set_robust_list(0x555556b47660, 24 [pid 6041] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6040] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6038] +++ exited with 0 +++ [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6042 [pid 6042] <... set_robust_list resumed>) = 0 [pid 6041] <... prctl resumed>) = 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6038, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6040] <... socket resumed>) = 5 [pid 6040] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6042] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6041] setpgid(0, 0 [pid 6042] <... prctl resumed>) = 0 [pid 6041] <... setpgid resumed>) = 0 [pid 6040] <... openat resumed>) = 6 [pid 6042] setpgid(0, 0 [pid 6037] +++ exited with 0 +++ [pid 6040] write(6, "3", 1 [pid 6042] <... setpgid resumed>) = 0 [pid 6041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6037, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6040] <... write resumed>) = 1 [pid 6042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6041] <... openat resumed>) = 3 [pid 6041] write(3, "1000", 4 [pid 6040] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6042] <... openat resumed>) = 3 [pid 6041] <... write resumed>) = 4 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program [pid 6041] close(3 [pid 6042] write(3, "1000", 4 [pid 6041] <... close resumed>) = 0 [pid 6042] <... write resumed>) = 4 [pid 6041] write(1, "executing program\n", 18) = 18 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6042] close(3 executing program [pid 6041] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6044 attached ./strace-static-x86_64: Process 6043 attached [pid 6042] <... close resumed>) = 0 [pid 6040] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6044] set_robust_list(0x555556b47660, 24 [pid 6043] set_robust_list(0x555556b47660, 24 [pid 6042] write(1, "executing program\n", 18 [pid 6040] exit_group(0 [pid 6044] <... set_robust_list resumed>) = 0 [pid 6043] <... set_robust_list resumed>) = 0 [pid 6042] <... write resumed>) = 18 [pid 6041] <... bpf resumed>) = 3 [pid 6040] <... exit_group resumed>) = ? [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6044 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6043 [ 94.539199][ T6040] FAULT_INJECTION: forcing a failure. [ 94.539199][ T6040] name failslab, interval 1, probability 0, space 0, times 0 [ 94.553862][ T6040] CPU: 0 UID: 0 PID: 6040 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 94.553894][ T6040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 94.553907][ T6040] Call Trace: [ 94.553915][ T6040] [ 94.553924][ T6040] dump_stack_lvl+0x189/0x250 [ 94.553950][ T6040] ? __pfx____ratelimit+0x10/0x10 [ 94.553979][ T6040] ? __pfx_dump_stack_lvl+0x10/0x10 [ 94.554000][ T6040] ? __pfx__printk+0x10/0x10 [ 94.554026][ T6040] ? fs_reclaim_acquire+0x7d/0x100 [ 94.554047][ T6040] ? rcu_is_watching+0x15/0xb0 [ 94.554078][ T6040] ? __pfx___might_resched+0x10/0x10 [ 94.554116][ T6040] ? lock_acquire+0x5f/0x360 [ 94.554144][ T6040] should_fail_ex+0x414/0x560 [ 94.554180][ T6040] should_failslab+0xa8/0x100 [ 94.554199][ T6040] kmem_cache_alloc_node_noprof+0x76/0x3c0 [ 94.554229][ T6040] ? __alloc_skb+0x112/0x2d0 [ 94.554274][ T6040] __alloc_skb+0x112/0x2d0 [ 94.554307][ T6040] netlink_sendmsg+0x5c6/0xb30 [ 94.554344][ T6040] ? __pfx_netlink_sendmsg+0x10/0x10 [ 94.554378][ T6040] ? aa_sock_msg_perm+0x94/0x160 [ 94.554406][ T6040] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 94.554431][ T6040] ? __pfx_netlink_sendmsg+0x10/0x10 [ 94.554462][ T6040] __sock_sendmsg+0x219/0x270 [ 94.554491][ T6040] ____sys_sendmsg+0x505/0x830 [ 94.554515][ T6040] ? __pfx_____sys_sendmsg+0x10/0x10 [ 94.554542][ T6040] ? import_iovec+0x74/0xa0 [ 94.554573][ T6040] ___sys_sendmsg+0x21f/0x2a0 [ 94.554595][ T6040] ? __pfx____sys_sendmsg+0x10/0x10 [ 94.554620][ T6040] ? do_raw_spin_lock+0x121/0x290 [ 94.554668][ T6040] __x64_sys_sendmsg+0x19b/0x260 [ 94.554689][ T6040] ? _raw_spin_unlock_irq+0x2e/0x50 [ 94.554717][ T6040] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 94.554745][ T6040] ? rcu_is_watching+0x15/0xb0 [ 94.554783][ T6040] do_syscall_64+0xfa/0x3b0 [ 94.554816][ T6040] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.554836][ T6040] ? clear_bhb_loop+0x60/0xb0 [ 94.554859][ T6040] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.554878][ T6040] RIP: 0033:0x7f7d4bd78999 [ 94.554895][ T6040] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 94.554909][ T6040] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [pid 6044] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6043] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6042] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6041] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6043] <... prctl resumed>) = 0 [pid 6041] <... bpf resumed>) = 4 [pid 6044] <... prctl resumed>) = 0 [pid 6043] setpgid(0, 0 [pid 6042] <... bpf resumed>) = 3 [pid 6040] +++ exited with 0 +++ [pid 6044] setpgid(0, 0 [pid 6043] <... setpgid resumed>) = 0 [pid 6042] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6041] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6044] <... setpgid resumed>) = 0 [pid 6043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6042] <... bpf resumed>) = 4 [pid 6041] <... socket resumed>) = 5 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6040, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6043] <... openat resumed>) = 3 [pid 6044] <... openat resumed>) = 3 [pid 6043] write(3, "1000", 4 [pid 6042] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6041] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6044] write(3, "1000", 4 [pid 6043] <... write resumed>) = 4 [pid 6042] <... socket resumed>) = 5 [pid 6041] <... openat resumed>) = 6 [pid 6044] <... write resumed>) = 4 [pid 6043] close(3 [pid 6042] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6044] close(3 [pid 6043] <... close resumed>) = 0 [pid 6041] write(6, "3", 1 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6044] <... close resumed>) = 0 [pid 6043] write(1, "executing program\n", 18 [pid 6042] <... openat resumed>) = 6 executing program [pid 6043] <... write resumed>) = 18 [pid 6041] <... write resumed>) = 1 [pid 6044] write(1, "executing program\n", 18 executing program [pid 6043] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6042] write(6, "3", 1 [pid 6041] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 6045 attached [pid 6044] <... write resumed>) = 18 [pid 6042] <... write resumed>) = 1 [pid 6041] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6045] set_robust_list(0x555556b47660, 24 [pid 6044] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6042] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6041] exit_group(0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6045 [pid 6045] <... set_robust_list resumed>) = 0 [pid 6044] <... bpf resumed>) = 3 [pid 6042] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6041] <... exit_group resumed>) = ? [pid 6045] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6044] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6043] <... bpf resumed>) = 3 [pid 6042] exit_group(0 [pid 6045] <... prctl resumed>) = 0 [pid 6045] setpgid(0, 0 [pid 6044] <... bpf resumed>) = 4 [pid 6043] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6042] <... exit_group resumed>) = ? [pid 6045] <... setpgid resumed>) = 0 [pid 6041] +++ exited with 0 +++ [pid 6044] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6043] <... bpf resumed>) = 4 [pid 6045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6044] <... socket resumed>) = 5 [pid 6043] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6045] <... openat resumed>) = 3 [pid 6044] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6043] <... socket resumed>) = 5 [pid 6042] +++ exited with 0 +++ [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6041, si_uid=0, si_status=0, si_utime=0, si_stime=27 /* 0.27 s */} --- [pid 6045] write(3, "1000", 4 [pid 6044] <... openat resumed>) = 6 [pid 6043] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6045] <... write resumed>) = 4 [pid 6043] <... openat resumed>) = 6 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6042, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [ 94.554930][ T6040] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [ 94.554943][ T6040] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [ 94.554954][ T6040] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [ 94.554964][ T6040] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 94.554974][ T6040] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 94.554992][ T6040] [pid 6045] close(3 [pid 6044] write(6, "3", 1 [pid 6043] write(6, "3", 1 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6045] <... close resumed>) = 0 [pid 6044] <... write resumed>) = 1 [pid 6043] <... write resumed>) = 1 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6045] write(1, "executing program\n", 18executing program ) = 18 executing program [pid 6044] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6043] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6045] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6046 attached [pid 6046] set_robust_list(0x555556b47660, 24 [pid 6045] <... bpf resumed>) = 3 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6046 [pid 6046] <... set_robust_list resumed>) = 0 [pid 6046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6046] setpgid(0, 0) = 0 [pid 6046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6046] write(3, "1000", 4) = 4 [pid 6046] close(3 [pid 6045] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6046] <... close resumed>) = 0 [pid 6046] write(1, "executing program\n", 18 [pid 6045] <... bpf resumed>) = 4 [pid 6046] <... write resumed>) = 18 [pid 6046] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6045] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6046] <... bpf resumed>) = 3 [pid 6045] <... socket resumed>) = 5 [pid 6046] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6045] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6046] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6045] <... openat resumed>) = 6 [pid 6044] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [ 94.873550][ T6043] FAULT_INJECTION: forcing a failure. [ 94.873550][ T6043] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 94.886881][ T6043] CPU: 0 UID: 0 PID: 6043 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 94.886911][ T6043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 94.886925][ T6043] Call Trace: [ 94.886932][ T6043] [ 94.886941][ T6043] dump_stack_lvl+0x189/0x250 [ 94.886968][ T6043] ? __pfx____ratelimit+0x10/0x10 [ 94.886998][ T6043] ? __pfx_dump_stack_lvl+0x10/0x10 [ 94.887017][ T6043] ? __pfx__printk+0x10/0x10 [ 94.887040][ T6043] ? __might_fault+0xb0/0x130 [ 94.887082][ T6043] ? rcu_is_watching+0x15/0xb0 [ 94.887114][ T6043] should_fail_ex+0x414/0x560 [ 94.887150][ T6043] _copy_from_user+0x2d/0xb0 [ 94.887181][ T6043] ___sys_sendmsg+0x158/0x2a0 [ 94.887205][ T6043] ? __pfx____sys_sendmsg+0x10/0x10 [ 94.887231][ T6043] ? do_raw_spin_lock+0x121/0x290 [ 94.887278][ T6043] __x64_sys_sendmsg+0x19b/0x260 [ 94.887298][ T6043] ? _raw_spin_unlock_irq+0x2e/0x50 [ 94.887325][ T6043] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 94.887350][ T6043] ? rcu_is_watching+0x15/0xb0 [ 94.887386][ T6043] do_syscall_64+0xfa/0x3b0 [ 94.887416][ T6043] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.887436][ T6043] ? clear_bhb_loop+0x60/0xb0 [ 94.887460][ T6043] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.887481][ T6043] RIP: 0033:0x7f7d4bd78999 [ 94.887499][ T6043] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 94.887517][ T6043] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 94.887539][ T6043] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [ 94.887554][ T6043] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [ 94.887567][ T6043] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [pid 6043] <... sendmsg resumed>) = -1 EFAULT (Bad address) ./strace-static-x86_64: Process 6047 attached [pid 6046] <... socket resumed>) = 5 [pid 6045] write(6, "3", 1 [pid 6043] exit_group(0 [pid 6047] set_robust_list(0x555556b47660, 24 [pid 6046] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6045] <... write resumed>) = 1 [pid 6044] exit_group(0 [pid 6047] <... set_robust_list resumed>) = 0 [pid 6046] <... openat resumed>) = 6 [pid 6045] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6044] <... exit_group resumed>) = ? [pid 6047] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6046] write(6, "3", 1 [pid 6045] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6047 [pid 6043] <... exit_group resumed>) = ? [pid 6047] <... prctl resumed>) = 0 [pid 6046] <... write resumed>) = 1 [pid 6045] exit_group(0 [pid 6047] setpgid(0, 0 [pid 6046] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6045] <... exit_group resumed>) = ? [pid 6044] +++ exited with 0 +++ [pid 6043] +++ exited with 0 +++ [pid 6047] <... setpgid resumed>) = 0 [pid 6046] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6044, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6046] exit_group(0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6043, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6047] <... openat resumed>) = 3 [pid 6046] <... exit_group resumed>) = ? [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6047] write(3, "1000", 4) = 4 [pid 6045] +++ exited with 0 +++ [pid 6047] close(3) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6045, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- executing program [pid 6047] write(1, "executing program\n", 18 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6047] <... write resumed>) = 18 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6046] +++ exited with 0 +++ [pid 6047] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6046, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6048 attached [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6048] set_robust_list(0x555556b47660, 24) = 0 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6049 attached [pid 6049] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6049 [pid 6049] <... set_robust_list resumed>) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6049] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6048] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6049] setpgid(0, 0 [pid 6048] <... prctl resumed>) = 0 [pid 6049] <... setpgid resumed>) = 0 [pid 6048] setpgid(0, 0 [pid 6049] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6048] <... setpgid resumed>) = 0 [pid 6049] <... openat resumed>) = 3 [pid 6048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6049] write(3, "1000", 4 [pid 6048] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6050 attached [pid 6049] <... write resumed>) = 4 [pid 6048] write(3, "1000", 4 [pid 6049] close(3 [pid 6048] <... write resumed>) = 4 [pid 6049] <... close resumed>) = 0 [pid 6048] close(3 [pid 6049] write(1, "executing program\n", 18 [pid 6048] <... close resumed>) = 0 executing program executing program [pid 6050] set_robust_list(0x555556b47660, 24 [pid 6049] <... write resumed>) = 18 [pid 6048] write(1, "executing program\n", 18 [pid 6050] <... set_robust_list resumed>) = 0 [pid 6049] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6048] <... write resumed>) = 18 ./strace-static-x86_64: Process 6051 attached [pid 6050] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6049] <... bpf resumed>) = 3 [pid 6048] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6048 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6050 [pid 6048] <... bpf resumed>) = 3 [pid 6047] <... bpf resumed>) = 3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6051 [pid 6050] <... prctl resumed>) = 0 [pid 6049] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6048] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6050] setpgid(0, 0 [pid 6047] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6048] <... bpf resumed>) = 4 [pid 6051] set_robust_list(0x555556b47660, 24 [pid 6050] <... setpgid resumed>) = 0 [pid 6049] <... bpf resumed>) = 4 [pid 6048] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6047] <... bpf resumed>) = 4 [pid 6051] <... set_robust_list resumed>) = 0 [pid 6050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 94.887580][ T6043] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 94.887591][ T6043] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 94.887612][ T6043] [pid 6049] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6051] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6047] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6051] <... prctl resumed>) = 0 [pid 6050] <... openat resumed>) = 3 [pid 6049] <... socket resumed>) = 5 [pid 6050] write(3, "1000", 4 [pid 6048] <... socket resumed>) = 5 [pid 6049] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6047] <... socket resumed>) = 5 [pid 6051] setpgid(0, 0 [pid 6050] <... write resumed>) = 4 [pid 6049] <... openat resumed>) = 6 [pid 6051] <... setpgid resumed>) = 0 [pid 6047] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6050] close(3 [pid 6049] write(6, "3", 1 [pid 6051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6049] <... write resumed>) = 1 [pid 6050] <... close resumed>) = 0 [pid 6051] <... openat resumed>) = 3 [pid 6050] write(1, "executing program\n", 18executing program [pid 6049] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6047] <... openat resumed>) = 6 [pid 6051] write(3, "1000", 4 [pid 6050] <... write resumed>) = 18 [pid 6049] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6047] write(6, "3", 1 [pid 6051] <... write resumed>) = 4 [pid 6050] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6049] exit_group(0 [pid 6048] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6051] close(3 [pid 6049] <... exit_group resumed>) = ? executing program [pid 6047] <... write resumed>) = 1 [pid 6051] <... close resumed>) = 0 [pid 6051] write(1, "executing program\n", 18) = 18 [pid 6051] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6050] <... bpf resumed>) = 3 [pid 6048] <... openat resumed>) = 6 [pid 6047] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6050] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6049] +++ exited with 0 +++ [pid 6048] write(6, "3", 1 [pid 6047] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6051] <... bpf resumed>) = 3 [pid 6050] <... bpf resumed>) = 4 [pid 6048] <... write resumed>) = 1 [pid 6047] exit_group(0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6049, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6051] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6050] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6048] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6047] <... exit_group resumed>) = ? [pid 6051] <... bpf resumed>) = 4 [pid 6050] <... socket resumed>) = 5 [pid 6048] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6051] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6051] <... socket resumed>) = 5 [pid 6050] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6048] exit_group(0 [pid 6047] +++ exited with 0 +++ ./strace-static-x86_64: Process 6052 attached [pid 6051] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6050] <... openat resumed>) = 6 [pid 6048] <... exit_group resumed>) = ? [pid 6052] set_robust_list(0x555556b47660, 24 [pid 6051] <... openat resumed>) = 6 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6052 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6047, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6052] <... set_robust_list resumed>) = 0 [pid 6051] write(6, "3", 1 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6052] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6051] <... write resumed>) = 1 [pid 6052] <... prctl resumed>) = 0 [pid 6051] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6052] setpgid(0, 0 [pid 6051] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6052] <... setpgid resumed>) = 0 [pid 6051] exit_group(0 [pid 6050] write(6, "3", 1 [pid 6048] +++ exited with 0 +++ [pid 6052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6051] <... exit_group resumed>) = ? [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6048, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6050] <... write resumed>) = 1 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6052] <... openat resumed>) = 3 [pid 6050] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6052] write(3, "1000", 4 [pid 6050] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6052] <... write resumed>) = 4 [pid 6050] exit_group(0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6050] <... exit_group resumed>) = ? [pid 6052] close(3 [pid 6051] +++ exited with 0 +++ [pid 6052] <... close resumed>) = 0 executing program [pid 5846] <... restart_syscall resumed>) = 0 [pid 6052] write(1, "executing program\n", 18 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6051, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6052] <... write resumed>) = 18 [pid 6050] +++ exited with 0 +++ [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6050, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6052] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6053 attached [pid 6053] set_robust_list(0x555556b47660, 24 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6053 [pid 6053] <... set_robust_list resumed>) = 0 [pid 6053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6053] setpgid(0, 0) = 0 [pid 6053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6054 attached [pid 6052] <... bpf resumed>) = 3 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6054 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6054] set_robust_list(0x555556b47660, 24 [pid 6053] <... openat resumed>) = 3 [pid 6053] write(3, "1000", 4 [pid 6054] <... set_robust_list resumed>) = 0 [pid 6053] <... write resumed>) = 4 [pid 6052] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6053] close(3 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6054] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6053] <... close resumed>) = 0 ./strace-static-x86_64: Process 6055 attached [pid 6052] <... bpf resumed>) = 4 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6055] set_robust_list(0x555556b47660, 24 [pid 6054] <... prctl resumed>) = 0 [pid 6053] write(1, "executing program\n", 18 [pid 6052] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6055] <... set_robust_list resumed>) = 0 [pid 6052] <... socket resumed>) = 5 executing program [pid 6055] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6054] setpgid(0, 0 [pid 6053] <... write resumed>) = 18 [pid 6052] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6055 ./strace-static-x86_64: Process 6056 attached [pid 6055] <... prctl resumed>) = 0 [pid 6054] <... setpgid resumed>) = 0 [pid 6053] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6052] <... openat resumed>) = 6 [pid 6056] set_robust_list(0x555556b47660, 24 [pid 6055] setpgid(0, 0 [pid 6054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6056] <... set_robust_list resumed>) = 0 [pid 6052] write(6, "3", 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6056 [pid 6056] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6055] <... setpgid resumed>) = 0 [pid 6052] <... write resumed>) = 1 [pid 6052] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6056] <... prctl resumed>) = 0 [pid 6054] <... openat resumed>) = 3 [pid 6052] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6056] setpgid(0, 0 [pid 6055] <... openat resumed>) = 3 [pid 6053] <... bpf resumed>) = 3 [pid 6052] exit_group(0 [pid 6056] <... setpgid resumed>) = 0 [pid 6054] write(3, "1000", 4 [pid 6055] write(3, "1000", 4 [pid 6054] <... write resumed>) = 4 [pid 6056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6053] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6052] <... exit_group resumed>) = ? [pid 6056] <... openat resumed>) = 3 [pid 6055] <... write resumed>) = 4 [pid 6054] close(3 [pid 6055] close(3 [pid 6054] <... close resumed>) = 0 executing program [pid 6056] write(3, "1000", 4 [pid 6055] <... close resumed>) = 0 [pid 6054] write(1, "executing program\n", 18 [pid 6053] <... bpf resumed>) = 4 [pid 6056] <... write resumed>) = 4 [pid 6054] <... write resumed>) = 18 [pid 6056] close(3 [pid 6055] write(1, "executing program\n", 18 [pid 6053] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6052] +++ exited with 0 +++ [pid 6056] <... close resumed>) = 0 executing program executing program [pid 6056] write(1, "executing program\n", 18 [pid 6055] <... write resumed>) = 18 [pid 6054] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6053] <... socket resumed>) = 5 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6052, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6056] <... write resumed>) = 18 [pid 6055] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6053] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6056] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] <... restart_syscall resumed>) = 0 [pid 6054] <... bpf resumed>) = 3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6054] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 6057 attached ) = 4 [pid 6053] <... openat resumed>) = 6 [pid 6055] <... bpf resumed>) = 3 [pid 6054] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6056] <... bpf resumed>) = 3 [pid 6053] write(6, "3", 1 [pid 6057] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6057 [pid 6057] <... set_robust_list resumed>) = 0 [pid 6056] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6055] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6053] <... write resumed>) = 1 [pid 6057] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6056] <... bpf resumed>) = 4 [pid 6055] <... bpf resumed>) = 4 [pid 6053] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6057] <... prctl resumed>) = 0 [pid 6056] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6055] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6054] <... socket resumed>) = 5 [pid 6053] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6057] setpgid(0, 0 [pid 6056] <... socket resumed>) = 5 [pid 6055] <... socket resumed>) = 5 [pid 6054] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6053] exit_group(0 [pid 6057] <... setpgid resumed>) = 0 [pid 6056] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6055] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6054] <... openat resumed>) = 6 [pid 6057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6056] <... openat resumed>) = 6 [pid 6055] <... openat resumed>) = 6 [pid 6053] <... exit_group resumed>) = ? [pid 6057] <... openat resumed>) = 3 [pid 6054] write(6, "3", 1 [pid 6057] write(3, "1000", 4 [pid 6055] write(6, "3", 1 [pid 6056] write(6, "3", 1 [pid 6057] <... write resumed>) = 4 [pid 6055] <... write resumed>) = 1 [pid 6057] close(3 [pid 6056] <... write resumed>) = 1 [pid 6055] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6057] <... close resumed>) = 0 [pid 6056] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6053] +++ exited with 0 +++ [pid 6057] write(1, "executing program\n", 18executing program [pid 6056] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6055] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6053, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6057] <... write resumed>) = 18 [pid 6056] exit_group(0 [pid 6055] exit_group(0 [pid 6054] <... write resumed>) = 1 [pid 6056] <... exit_group resumed>) = ? [pid 6055] <... exit_group resumed>) = ? [pid 6054] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6057] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6054] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6054] exit_group(0 [pid 6057] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6056] +++ exited with 0 +++ [pid 6057] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6055] +++ exited with 0 +++ [pid 6054] <... exit_group resumed>) = ? [pid 6057] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 ./strace-static-x86_64: Process 6059 attached [pid 6057] write(6, "3", 1 [pid 6054] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6056, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6059] set_robust_list(0x555556b47660, 24 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6059 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6054, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6055, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6059] <... set_robust_list resumed>) = 0 [pid 6057] <... write resumed>) = 1 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6059] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6057] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 6060 attached [pid 6057] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6059] <... prctl resumed>) = 0 [pid 6057] exit_group(0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6060 [pid 6060] set_robust_list(0x555556b47660, 24 [pid 6059] setpgid(0, 0 [pid 6057] <... exit_group resumed>) = ? [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6060] <... set_robust_list resumed>) = 0 [pid 6059] <... setpgid resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 6061 attached [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6061 [pid 6059] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6061] set_robust_list(0x555556b47660, 24 [pid 6060] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6059] <... openat resumed>) = 3 [pid 6057] +++ exited with 0 +++ [pid 6059] write(3, "1000", 4) = 4 [pid 6059] close(3) = 0 [pid 6061] <... set_robust_list resumed>) = 0 [pid 6060] <... prctl resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6057, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6059] write(1, "executing program\n", 18executing program [pid 6060] setpgid(0, 0 [pid 6059] <... write resumed>) = 18 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6060] <... setpgid resumed>) = 0 [pid 6059] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6062 attached [pid 6060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6060] write(3, "1000", 4) = 4 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6062 [pid 6060] close(3) = 0 [pid 6060] write(1, "executing program\n", 18executing program ) = 18 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6060] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6063 attached ) = 3 [pid 6063] set_robust_list(0x555556b47660, 24 [pid 6062] set_robust_list(0x555556b47660, 24 [pid 6061] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6060] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6063 [pid 6063] <... set_robust_list resumed>) = 0 [pid 6062] <... set_robust_list resumed>) = 0 [pid 6060] <... bpf resumed>) = 4 [pid 6061] <... prctl resumed>) = 0 [pid 6059] <... bpf resumed>) = 3 [pid 6063] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6062] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6061] setpgid(0, 0 [pid 6060] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6059] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6063] <... prctl resumed>) = 0 [pid 6062] <... prctl resumed>) = 0 [pid 6061] <... setpgid resumed>) = 0 [pid 6059] <... bpf resumed>) = 4 [pid 6060] <... socket resumed>) = 5 [pid 6063] setpgid(0, 0 [pid 6062] setpgid(0, 0 [pid 6060] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6059] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6060] <... openat resumed>) = 6 [pid 6059] <... socket resumed>) = 5 [pid 6063] <... setpgid resumed>) = 0 [pid 6062] <... setpgid resumed>) = 0 [pid 6060] write(6, "3", 1 [pid 6061] <... openat resumed>) = 3 [pid 6059] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6061] write(3, "1000", 4 [pid 6060] <... write resumed>) = 1 [pid 6063] <... openat resumed>) = 3 [pid 6062] <... openat resumed>) = 3 [pid 6059] <... openat resumed>) = 6 [pid 6063] write(3, "1000", 4 [pid 6062] write(3, "1000", 4 [pid 6060] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6062] <... write resumed>) = 4 [pid 6061] <... write resumed>) = 4 [pid 6060] exit_group(0 [pid 6063] <... write resumed>) = 4 [pid 6059] write(6, "3", 1 [pid 6062] close(3 [pid 6061] close(3 [pid 6060] <... exit_group resumed>) = ? executing program executing program executing program [pid 6063] close(3 [pid 6062] <... close resumed>) = 0 [pid 6061] <... close resumed>) = 0 [pid 6059] <... write resumed>) = 1 [pid 6063] <... close resumed>) = 0 [pid 6062] write(1, "executing program\n", 18 [pid 6061] write(1, "executing program\n", 18 [pid 6063] write(1, "executing program\n", 18 [pid 6062] <... write resumed>) = 18 [pid 6059] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6063] <... write resumed>) = 18 [pid 6061] <... write resumed>) = 18 [pid 6062] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6059] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6063] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6061] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6059] exit_group(0 [pid 6062] <... bpf resumed>) = 3 [pid 6060] +++ exited with 0 +++ [pid 6059] <... exit_group resumed>) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6060, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6062] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6061] <... bpf resumed>) = 3 [pid 6062] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6063] <... bpf resumed>) = 3 [pid 6062] <... socket resumed>) = 5 [pid 6062] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6063] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6062] <... openat resumed>) = 6 [pid 6061] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6062] write(6, "3", 1) = 1 [pid 6062] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6059] +++ exited with 0 +++ [pid 6063] <... bpf resumed>) = 4 [pid 6061] <... bpf resumed>) = 4 [pid 6063] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6062] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6061] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6059, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6063] <... socket resumed>) = 5 [pid 6062] exit_group(0 [pid 6061] <... socket resumed>) = 5 [pid 6063] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6063] <... openat resumed>) = 6 [pid 6062] <... exit_group resumed>) = ? [pid 6061] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6063] write(6, "3", 1 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6064 attached [pid 6063] <... write resumed>) = 1 [pid 6061] <... openat resumed>) = 6 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6064] set_robust_list(0x555556b47660, 24 [pid 6063] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6062] +++ exited with 0 +++ [pid 6061] write(6, "3", 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6064 [pid 6064] <... set_robust_list resumed>) = 0 [pid 6063] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6061] <... write resumed>) = 1 [pid 6064] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6063] exit_group(0 [pid 6064] <... prctl resumed>) = 0 [pid 6063] <... exit_group resumed>) = ? [pid 6061] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6064] setpgid(0, 0 [pid 6061] <... sendmsg resumed>) = 28 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6062, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6064] <... setpgid resumed>) = 0 [pid 6061] exit_group(0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6065 attached ./strace-static-x86_64: Process 6066 attached [pid 6064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6061] <... exit_group resumed>) = ? [pid 6066] set_robust_list(0x555556b47660, 24 [pid 6065] set_robust_list(0x555556b47660, 24 [pid 6063] +++ exited with 0 +++ [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6066 [pid 6066] <... set_robust_list resumed>) = 0 [pid 6065] <... set_robust_list resumed>) = 0 [pid 6064] <... openat resumed>) = 3 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6065 [pid 6066] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6065] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6063, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6066] <... prctl resumed>) = 0 [pid 6065] <... prctl resumed>) = 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6066] setpgid(0, 0) = 0 [pid 6065] setpgid(0, 0 [pid 6061] +++ exited with 0 +++ [pid 6064] write(3, "1000", 4 [pid 6066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6065] <... setpgid resumed>) = 0 [pid 6064] <... write resumed>) = 4 [pid 6066] <... openat resumed>) = 3 [pid 6065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6064] close(3 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6061, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6066] write(3, "1000", 4 [pid 6065] <... openat resumed>) = 3 [pid 6064] <... close resumed>) = 0 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6066] <... write resumed>) = 4 executing program [pid 6065] write(3, "1000", 4 [pid 6064] write(1, "executing program\n", 18 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6066] close(3 [pid 6065] <... write resumed>) = 4 [pid 6064] <... write resumed>) = 18 [pid 6066] <... close resumed>) = 0 [pid 6065] close(3 [pid 6066] write(1, "executing program\n", 18executing program [pid 6065] <... close resumed>) = 0 [pid 6064] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6066] <... write resumed>) = 18 executing program [pid 6065] write(1, "executing program\n", 18 [pid 6066] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6065] <... write resumed>) = 18 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6067 attached [pid 6066] <... bpf resumed>) = 3 [pid 6065] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6067] set_robust_list(0x555556b47660, 24) = 0 [pid 6067] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6066] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6064] <... bpf resumed>) = 3 [pid 6066] <... bpf resumed>) = 4 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6067 [pid 6067] <... prctl resumed>) = 0 [pid 6065] <... bpf resumed>) = 3 [pid 6067] setpgid(0, 0 [pid 6064] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 6068 attached [pid 6067] <... setpgid resumed>) = 0 [pid 6066] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6065] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6064] <... bpf resumed>) = 4 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6068 [pid 6068] set_robust_list(0x555556b47660, 24 [pid 6067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6066] <... socket resumed>) = 5 [pid 6065] <... bpf resumed>) = 4 [pid 6068] <... set_robust_list resumed>) = 0 [pid 6067] <... openat resumed>) = 3 [pid 6066] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6065] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6064] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6068] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6067] write(3, "1000", 4 [pid 6066] <... openat resumed>) = 6 [pid 6065] <... socket resumed>) = 5 [pid 6068] <... prctl resumed>) = 0 [pid 6067] <... write resumed>) = 4 [pid 6066] write(6, "3", 1 [pid 6065] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6064] <... socket resumed>) = 5 [pid 6068] setpgid(0, 0 [pid 6067] close(3 [pid 6066] <... write resumed>) = 1 [pid 6065] <... openat resumed>) = 6 [pid 6064] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6068] <... setpgid resumed>) = 0 [pid 6067] <... close resumed>) = 0 [pid 6066] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6067] write(1, "executing program\n", 18executing program [pid 6066] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6065] write(6, "3", 1 [pid 6064] <... openat resumed>) = 6 [pid 6068] <... openat resumed>) = 3 [pid 6067] <... write resumed>) = 18 [pid 6066] exit_group(0 [pid 6065] <... write resumed>) = 1 [pid 6068] write(3, "1000", 4 [pid 6067] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6066] <... exit_group resumed>) = ? [pid 6065] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6064] write(6, "3", 1 [pid 6068] <... write resumed>) = 4 [pid 6067] <... bpf resumed>) = 3 [pid 6064] <... write resumed>) = 1 [pid 6064] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 28 [pid 6064] exit_group(0) = ? [pid 6066] +++ exited with 0 +++ [pid 6065] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6068] close(3 [pid 6067] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6065] exit_group(0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6066, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6068] <... close resumed>) = 0 [pid 6065] <... exit_group resumed>) = ? executing program [pid 6068] write(1, "executing program\n", 18) = 18 [pid 6068] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6064] +++ exited with 0 +++ [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6067] <... bpf resumed>) = 4 [pid 6065] +++ exited with 0 +++ [pid 5846] <... restart_syscall resumed>) = 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6064, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6068] <... bpf resumed>) = 3 [pid 6067] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6065, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6068] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6067] <... socket resumed>) = 5 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6068] <... bpf resumed>) = 4 [pid 6067] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6069 attached ) = 6 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6069] set_robust_list(0x555556b47660, 24 [pid 6067] write(6, "3", 1 [pid 6069] <... set_robust_list resumed>) = 0 [pid 6068] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6067] <... write resumed>) = 1 [pid 6069] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6068] <... socket resumed>) = 5 [pid 6067] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6069 [pid 6069] <... prctl resumed>) = 0 [pid 6068] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6067] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) ./strace-static-x86_64: Process 6071 attached ./strace-static-x86_64: Process 6070 attached [pid 6069] setpgid(0, 0 [pid 6068] <... openat resumed>) = 6 [pid 6067] exit_group(0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6071 [pid 6070] set_robust_list(0x555556b47660, 24 [pid 6069] <... setpgid resumed>) = 0 [pid 6070] <... set_robust_list resumed>) = 0 [pid 6069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6068] write(6, "3", 1 [pid 6067] <... exit_group resumed>) = ? [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6070 [pid 6071] set_robust_list(0x555556b47660, 24 [pid 6070] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6069] <... openat resumed>) = 3 [pid 6068] <... write resumed>) = 1 [pid 6071] <... set_robust_list resumed>) = 0 [pid 6071] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6070] <... prctl resumed>) = 0 [pid 6071] <... prctl resumed>) = 0 [pid 6070] setpgid(0, 0 [pid 6069] write(3, "1000", 4 [pid 6068] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6071] setpgid(0, 0 [pid 6070] <... setpgid resumed>) = 0 [pid 6071] <... setpgid resumed>) = 0 [pid 6069] <... write resumed>) = 4 [pid 6068] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6069] close(3 [pid 6067] +++ exited with 0 +++ [pid 6068] exit_group(0 [pid 6070] <... openat resumed>) = 3 [pid 6068] <... exit_group resumed>) = ? [pid 6069] <... close resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6067, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6068] +++ exited with 0 +++ executing program [pid 6071] <... openat resumed>) = 3 [pid 6070] write(3, "1000", 4 [pid 6069] write(1, "executing program\n", 18 [pid 6071] write(3, "1000", 4 [pid 6070] <... write resumed>) = 4 [pid 6071] <... write resumed>) = 4 [pid 6069] <... write resumed>) = 18 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6068, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6070] close(3 [pid 6071] close(3executing program executing program [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6070] <... close resumed>) = 0 [pid 6071] <... close resumed>) = 0 [pid 6069] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6071] write(1, "executing program\n", 18 [pid 6070] write(1, "executing program\n", 18 [pid 6071] <... write resumed>) = 18 [pid 6070] <... write resumed>) = 18 [pid 6071] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6070] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6072 attached [pid 6072] set_robust_list(0x555556b47660, 24) = 0 [pid 6071] <... bpf resumed>) = 3 [pid 6070] <... bpf resumed>) = 3 [pid 6069] <... bpf resumed>) = 3 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6072 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6071] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6070] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6069] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6072] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6071] <... bpf resumed>) = 4 [pid 6072] <... prctl resumed>) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6072] setpgid(0, 0 [pid 6071] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6070] <... bpf resumed>) = 4 [pid 6069] <... bpf resumed>) = 4 [pid 6072] <... setpgid resumed>) = 0 [pid 6071] <... socket resumed>) = 5 [pid 6070] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6071] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6070] <... socket resumed>) = 5 [pid 6069] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6071] <... openat resumed>) = 6 [pid 6070] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6069] <... socket resumed>) = 5 [pid 6070] <... openat resumed>) = 6 [pid 6071] write(6, "3", 1 [pid 6069] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6073 attached [pid 6072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6071] <... write resumed>) = 1 [pid 6070] write(6, "3", 1 [pid 6069] <... openat resumed>) = 6 [pid 6073] set_robust_list(0x555556b47660, 24 [pid 6072] <... openat resumed>) = 3 [pid 6071] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6070] <... write resumed>) = 1 [pid 6069] write(6, "3", 1 [pid 6073] <... set_robust_list resumed>) = 0 [pid 6072] write(3, "1000", 4 [pid 6071] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6070] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6069] <... write resumed>) = 1 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6073 [pid 6073] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6072] <... write resumed>) = 4 [pid 6071] exit_group(0 [pid 6070] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6069] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6073] <... prctl resumed>) = 0 [pid 6072] close(3 [pid 6071] <... exit_group resumed>) = ? [pid 6070] exit_group(0 [pid 6069] <... sendmsg resumed>) = 28 [pid 6073] setpgid(0, 0 [pid 6072] <... close resumed>) = 0 [pid 6071] +++ exited with 0 +++ [pid 6070] <... exit_group resumed>) = ? [pid 6069] exit_group(0executing program [pid 6073] <... setpgid resumed>) = 0 [pid 6072] write(1, "executing program\n", 18 [pid 6069] <... exit_group resumed>) = ? [pid 6072] <... write resumed>) = 18 [pid 6073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6072] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6073] <... openat resumed>) = 3 [pid 6070] +++ exited with 0 +++ [pid 6069] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6071, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- executing program [pid 6073] write(3, "1000", 4 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6070, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6069, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6073] <... write resumed>) = 4 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6073] close(3) = 0 [pid 6073] write(1, "executing program\n", 18) = 18 [pid 6073] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6074 attached ) = 3 [pid 6072] <... bpf resumed>) = 3 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6074] set_robust_list(0x555556b47660, 24) = 0 [pid 6074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6073] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6072] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6074 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6074] setpgid(0, 0 [pid 6073] <... bpf resumed>) = 4 [pid 6072] <... bpf resumed>) = 4 [pid 6074] <... setpgid resumed>) = 0 [pid 6073] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6072] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6073] <... socket resumed>) = 5 [pid 6074] <... openat resumed>) = 3 [pid 6073] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6072] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6074] write(3, "1000", 4 [pid 6073] <... openat resumed>) = 6 [pid 6072] <... openat resumed>) = 6 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6075 attached [pid 6074] <... write resumed>) = 4 [pid 6073] write(6, "3", 1 [pid 6075] set_robust_list(0x555556b47660, 24 [pid 6074] close(3 [pid 6073] <... write resumed>) = 1 [pid 6072] write(6, "3", 1 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6075 ./strace-static-x86_64: Process 6076 attached [pid 6075] <... set_robust_list resumed>) = 0 [pid 6074] <... close resumed>) = 0 [pid 6073] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6072] <... write resumed>) = 1 [pid 6076] set_robust_list(0x555556b47660, 24 executing program [pid 6075] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6074] write(1, "executing program\n", 18 [pid 6072] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6075] <... prctl resumed>) = 0 [pid 6074] <... write resumed>) = 18 [pid 6072] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6075] setpgid(0, 0 [pid 6074] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6072] exit_group(0 [pid 6076] <... set_robust_list resumed>) = 0 [pid 6075] <... setpgid resumed>) = 0 [pid 6073] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6076 [pid 6076] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6074] <... bpf resumed>) = 3 [pid 6073] exit_group(0 [pid 6072] <... exit_group resumed>) = ? [pid 6076] <... prctl resumed>) = 0 [pid 6075] <... openat resumed>) = 3 [pid 6074] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6073] <... exit_group resumed>) = ? [pid 6076] setpgid(0, 0 [pid 6075] write(3, "1000", 4 [pid 6074] <... bpf resumed>) = 4 [pid 6075] <... write resumed>) = 4 [pid 6074] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6072] +++ exited with 0 +++ [pid 6075] close(3 [pid 6074] <... socket resumed>) = 5 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6072, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6075] <... close resumed>) = 0 [pid 6074] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6076] <... setpgid resumed>) = 0 executing program [pid 6075] write(1, "executing program\n", 18 [pid 6074] <... openat resumed>) = 6 [pid 6076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6075] <... write resumed>) = 18 [pid 6076] <... openat resumed>) = 3 [pid 6073] +++ exited with 0 +++ [pid 6076] write(3, "1000", 4 [pid 6075] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6074] write(6, "3", 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6073, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 6077 attached [pid 6076] <... write resumed>) = 4 [pid 6075] <... bpf resumed>) = 3 [pid 6077] set_robust_list(0x555556b47660, 24 [pid 6076] close(3 [pid 6077] <... set_robust_list resumed>) = 0 [pid 6076] <... close resumed>) = 0 [pid 6074] <... write resumed>) = 1 [pid 6075] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6074] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6077] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6076] write(1, "executing program\n", 18executing program [pid 6075] <... bpf resumed>) = 4 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6077 [pid 6077] <... prctl resumed>) = 0 [pid 6076] <... write resumed>) = 18 [pid 6074] <... sendmsg resumed>) = 28 [pid 6077] setpgid(0, 0 [pid 6076] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6077] <... setpgid resumed>) = 0 [pid 6075] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6074] exit_group(0 [pid 6075] <... socket resumed>) = 5 [pid 6074] <... exit_group resumed>) = ? [pid 6077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6076] <... bpf resumed>) = 3 [pid 6075] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6077] <... openat resumed>) = 3 [pid 6075] <... openat resumed>) = 6 [pid 6077] write(3, "1000", 4 [pid 6076] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6075] write(6, "3", 1 [pid 6074] +++ exited with 0 +++ [pid 6077] <... write resumed>) = 4 [pid 6075] <... write resumed>) = 1 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6074, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6077] close(3 [pid 6076] <... bpf resumed>) = 4 [pid 6075] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6077] <... close resumed>) = 0 [pid 6076] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6075] <... sendmsg resumed>) = 28 executing program [pid 6077] write(1, "executing program\n", 18) = 18 [pid 6076] <... socket resumed>) = 5 [pid 6075] exit_group(0 [pid 6077] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6076] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6075] <... exit_group resumed>) = ? [pid 6077] <... bpf resumed>) = 3 [pid 6076] <... openat resumed>) = 6 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6077] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6076] write(6, "3", 1 [pid 6075] +++ exited with 0 +++ [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6078 attached [pid 6078] set_robust_list(0x555556b47660, 24 [pid 6077] <... bpf resumed>) = 4 [pid 6076] <... write resumed>) = 1 [pid 6078] <... set_robust_list resumed>) = 0 [pid 6078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 6079 attached [pid 6077] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6076] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6075, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6078 [pid 6079] set_robust_list(0x555556b47660, 24 [pid 6078] setpgid(0, 0 [pid 6077] <... socket resumed>) = 5 [pid 6076] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6079] <... set_robust_list resumed>) = 0 [pid 6078] <... setpgid resumed>) = 0 [pid 6077] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6076] exit_group(0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6079 [pid 6076] <... exit_group resumed>) = ? [pid 6079] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6077] <... openat resumed>) = 6 [pid 6079] <... prctl resumed>) = 0 [pid 6079] setpgid(0, 0) = 0 [pid 6079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6077] write(6, "3", 1 [pid 6079] <... openat resumed>) = 3 [pid 6078] <... openat resumed>) = 3 [pid 6077] <... write resumed>) = 1 [pid 6079] write(3, "1000", 4 [pid 6078] write(3, "1000", 4 [pid 6077] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6078] <... write resumed>) = 4 [pid 6079] <... write resumed>) = 4 [pid 6078] close(3 [pid 6077] <... sendmsg resumed>) = 28 [pid 6079] close(3 [pid 6078] <... close resumed>) = 0 [pid 6076] +++ exited with 0 +++ [pid 6079] <... close resumed>) = 0 [pid 6079] write(1, "executing program\n", 18executing program executing program [pid 6078] write(1, "executing program\n", 18 [pid 6077] exit_group(0 [pid 6079] <... write resumed>) = 18 [pid 6078] <... write resumed>) = 18 [pid 6077] <... exit_group resumed>) = ? [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6076, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6079] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6078] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6079] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6078] <... bpf resumed>) = 3 [pid 6077] +++ exited with 0 +++ [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6077, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6078] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6081 attached ./strace-static-x86_64: Process 6080 attached [pid 6079] <... bpf resumed>) = 4 [pid 6080] set_robust_list(0x555556b47660, 24) = 0 [pid 6079] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6080] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6079] <... socket resumed>) = 5 [pid 6078] <... bpf resumed>) = 4 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6081 [pid 6081] set_robust_list(0x555556b47660, 24 [pid 6080] <... prctl resumed>) = 0 [pid 6079] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6080 [pid 6081] <... set_robust_list resumed>) = 0 [pid 6080] setpgid(0, 0 [pid 6078] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6080] <... setpgid resumed>) = 0 [pid 6079] <... openat resumed>) = 6 [pid 6081] <... prctl resumed>) = 0 [pid 6080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6078] <... socket resumed>) = 5 [pid 6081] setpgid(0, 0) = 0 [pid 6080] <... openat resumed>) = 3 [pid 6078] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6079] write(6, "3", 1 [pid 6080] write(3, "1000", 4 [pid 6079] <... write resumed>) = 1 [pid 6078] <... openat resumed>) = 6 [pid 6079] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] <... restart_syscall resumed>) = 0 [pid 6079] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6079] exit_group(0) = ? [pid 6081] <... openat resumed>) = 3 [pid 6080] <... write resumed>) = 4 [pid 6078] write(6, "3", 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6081] write(3, "1000", 4 [pid 6080] close(3 [pid 6078] <... write resumed>) = 1 executing program [pid 6081] <... write resumed>) = 4 [pid 6080] <... close resumed>) = 0 [pid 6078] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6081] close(3 [pid 6080] write(1, "executing program\n", 18 [pid 6078] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6080] <... write resumed>) = 18 [pid 6078] exit_group(0./strace-static-x86_64: Process 6082 attached [pid 6080] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6079] +++ exited with 0 +++ [pid 6078] <... exit_group resumed>) = ? [pid 6082] set_robust_list(0x555556b47660, 24 [pid 6081] <... close resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6082 [pid 6081] write(1, "executing program\n", 18 [pid 6082] <... set_robust_list resumed>) = 0 executing program [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6079, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6081] <... write resumed>) = 18 [pid 6080] <... bpf resumed>) = 3 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6082] <... prctl resumed>) = 0 [pid 6081] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6082] setpgid(0, 0 [pid 6080] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6078] +++ exited with 0 +++ [pid 6082] <... setpgid resumed>) = 0 [pid 6081] <... bpf resumed>) = 3 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6078, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6082] <... openat resumed>) = 3 [pid 6081] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6080] <... bpf resumed>) = 4 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6083 attached [pid 6080] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6083] set_robust_list(0x555556b47660, 24 [pid 6082] write(3, "1000", 4 [pid 6080] <... socket resumed>) = 5 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6083 [pid 6083] <... set_robust_list resumed>) = 0 [pid 6081] <... bpf resumed>) = 4 [pid 6082] <... write resumed>) = 4 ./strace-static-x86_64: Process 6084 attached [pid 6083] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6082] close(3 [pid 6081] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6080] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6084 [pid 6084] set_robust_list(0x555556b47660, 24 [pid 6083] <... prctl resumed>) = 0 [pid 6082] <... close resumed>) = 0 [pid 6081] <... socket resumed>) = 5 [pid 6080] <... openat resumed>) = 6 [pid 6084] <... set_robust_list resumed>) = 0 [pid 6083] setpgid(0, 0 [pid 6082] write(1, "executing program\n", 18executing program [pid 6081] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6083] <... setpgid resumed>) = 0 [pid 6082] <... write resumed>) = 18 [pid 6081] <... openat resumed>) = 6 [pid 6080] write(6, "3", 1 [pid 6082] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6081] write(6, "3", 1 [pid 6080] <... write resumed>) = 1 [pid 6084] <... prctl resumed>) = 0 [pid 6083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6082] <... bpf resumed>) = 3 [pid 6081] <... write resumed>) = 1 [pid 6084] setpgid(0, 0 [pid 6081] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6080] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6084] <... setpgid resumed>) = 0 [pid 6083] <... openat resumed>) = 3 [pid 6080] <... sendmsg resumed>) = 28 [pid 6081] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6083] write(3, "1000", 4 [pid 6081] exit_group(0 [pid 6080] exit_group(0 [pid 6084] <... openat resumed>) = 3 [pid 6083] <... write resumed>) = 4 [pid 6082] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6081] <... exit_group resumed>) = ? [pid 6084] write(3, "1000", 4 [pid 6083] close(3 [pid 6082] <... bpf resumed>) = 4 [pid 6080] <... exit_group resumed>) = ? [pid 6084] <... write resumed>) = 4 [pid 6083] <... close resumed>) = 0 [pid 6082] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6084] close(3 executing program [pid 6083] write(1, "executing program\n", 18 [pid 6082] <... socket resumed>) = 5 [pid 6080] +++ exited with 0 +++ [pid 6084] <... close resumed>) = 0 [pid 6083] <... write resumed>) = 18 executing program [pid 6082] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6084] write(1, "executing program\n", 18 [pid 6083] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6084] <... write resumed>) = 18 [pid 6082] <... openat resumed>) = 6 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6080, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6083] <... bpf resumed>) = 3 [pid 6084] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6082] write(6, "3", 1 [pid 6081] +++ exited with 0 +++ [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6083] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6082] <... write resumed>) = 1 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6081, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6082] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6082] exit_group(0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6082] <... exit_group resumed>) = ? [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6083] <... bpf resumed>) = 4 [pid 6083] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 6086 attached ./strace-static-x86_64: Process 6085 attached [pid 6084] <... bpf resumed>) = 3 [pid 6083] <... socket resumed>) = 5 [pid 6082] +++ exited with 0 +++ [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6085 [pid 6086] set_robust_list(0x555556b47660, 24 [pid 6085] set_robust_list(0x555556b47660, 24 [pid 6083] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6086] <... set_robust_list resumed>) = 0 [pid 6085] <... set_robust_list resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6082, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6084] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6083] write(6, "3", 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6086 [pid 6086] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6085] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6084] <... bpf resumed>) = 4 [pid 6083] <... write resumed>) = 1 [pid 6086] <... prctl resumed>) = 0 [pid 6085] <... prctl resumed>) = 0 [pid 6083] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6086] setpgid(0, 0 [pid 6085] setpgid(0, 0 [pid 6084] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6083] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6086] <... setpgid resumed>) = 0 [pid 6085] <... setpgid resumed>) = 0 [pid 6084] <... socket resumed>) = 5 [pid 6083] exit_group(0 [pid 6085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6084] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6083] <... exit_group resumed>) = ? [pid 6086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6085] <... openat resumed>) = 3 [pid 6084] <... openat resumed>) = 6 ./strace-static-x86_64: Process 6087 attached [pid 6087] set_robust_list(0x555556b47660, 24 [pid 6086] <... openat resumed>) = 3 [pid 6085] write(3, "1000", 4 [pid 6084] write(6, "3", 1 [pid 6087] <... set_robust_list resumed>) = 0 [pid 6084] <... write resumed>) = 1 [pid 6087] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6086] write(3, "1000", 4 [pid 6085] <... write resumed>) = 4 [pid 6084] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6087] <... prctl resumed>) = 0 [pid 6086] <... write resumed>) = 4 [pid 6085] close(3 [pid 6084] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6083] +++ exited with 0 +++ [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6087 [pid 6087] setpgid(0, 0 [pid 6086] close(3 [pid 6085] <... close resumed>) = 0 [pid 6084] exit_group(0 executing program executing program [pid 6087] <... setpgid resumed>) = 0 [pid 6086] <... close resumed>) = 0 [pid 6085] write(1, "executing program\n", 18 [pid 6084] <... exit_group resumed>) = ? [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6083, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6086] write(1, "executing program\n", 18 [pid 6085] <... write resumed>) = 18 [pid 6086] <... write resumed>) = 18 [pid 6085] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6087] <... openat resumed>) = 3 [pid 6086] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6085] <... bpf resumed>) = 3 [pid 6087] write(3, "1000", 4 [pid 6084] +++ exited with 0 +++ [pid 5845] <... restart_syscall resumed>) = 0 [pid 6087] <... write resumed>) = 4 executing program [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6084, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6087] close(3 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6087] <... close resumed>) = 0 [pid 6087] write(1, "executing program\n", 18) = 18 [pid 6086] <... bpf resumed>) = 3 [pid 6087] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6086] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6085] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 6088 attached [pid 6088] set_robust_list(0x555556b47660, 24 [pid 6087] <... bpf resumed>) = 3 [pid 6088] <... set_robust_list resumed>) = 0 [pid 6088] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6086] <... bpf resumed>) = 4 [pid 6088] <... prctl resumed>) = 0 [pid 6088] setpgid(0, 0) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6088 [pid 6087] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6086] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6085] <... bpf resumed>) = 4 [pid 6087] <... bpf resumed>) = 4 [pid 6086] <... socket resumed>) = 5 [pid 6088] <... openat resumed>) = 3 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6088] write(3, "1000", 4 [pid 6087] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6086] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6085] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6088] <... write resumed>) = 4 [pid 6087] <... socket resumed>) = 5 [pid 6086] <... openat resumed>) = 6 [pid 6088] close(3 [pid 6087] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6085] <... socket resumed>) = 5 [pid 6088] <... close resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD executing program [pid 6088] write(1, "executing program\n", 18 [pid 6087] <... openat resumed>) = 6 [pid 6086] write(6, "3", 1 [pid 6085] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6089 attached [pid 6088] <... write resumed>) = 18 [pid 6089] set_robust_list(0x555556b47660, 24 [pid 6088] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6087] write(6, "3", 1 [pid 6086] <... write resumed>) = 1 [pid 6085] <... openat resumed>) = 6 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6089 [pid 6089] <... set_robust_list resumed>) = 0 [pid 6088] <... bpf resumed>) = 3 [pid 6087] <... write resumed>) = 1 [pid 6086] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6085] write(6, "3", 1 [pid 6089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6086] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [ 95.712073][ T6087] FAULT_INJECTION: forcing a failure. [ 95.712073][ T6087] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 95.725178][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 95.725207][ T6087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 95.725220][ T6087] Call Trace: [ 95.725228][ T6087] [ 95.725237][ T6087] dump_stack_lvl+0x189/0x250 [ 95.725263][ T6087] ? __pfx____ratelimit+0x10/0x10 [ 95.725293][ T6087] ? __pfx_dump_stack_lvl+0x10/0x10 [ 95.725314][ T6087] ? __pfx__printk+0x10/0x10 [ 95.725347][ T6087] should_fail_ex+0x414/0x560 [ 95.725383][ T6087] strncpy_from_user+0x36/0x290 [ 95.725416][ T6087] strncpy_from_user_nofault+0x72/0x150 [ 95.725446][ T6087] bpf_bprintf_prepare+0xbbc/0x13d0 [ 95.725485][ T6087] ? __pfx_bpf_bprintf_prepare+0x10/0x10 [ 95.725516][ T6087] ? bpf_trace_printk+0xc1/0x190 [ 95.725538][ T6087] bpf_trace_printk+0xdb/0x190 [ 95.725556][ T6087] ? unwind_next_frame+0xa5/0x2390 [ 95.725576][ T6087] ? rcu_is_watching+0x15/0xb0 [ 95.725610][ T6087] ? __pfx_bpf_trace_printk+0x10/0x10 [ 95.725631][ T6087] ? bpf_trace_run2+0x186/0x4b0 [ 95.725654][ T6087] ? rcu_is_watching+0x15/0xb0 [ 95.725685][ T6087] ? lock_acquire+0x5f/0x360 [ 95.725712][ T6087] ? rcu_is_watching+0x15/0xb0 [ 95.725749][ T6087] ? lock_release+0x4b/0x3e0 [ 95.725778][ T6087] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 95.725796][ T6087] bpf_trace_run2+0x281/0x4b0 [ 95.725819][ T6087] ? kernel_text_address+0xa5/0xe0 [ 95.725844][ T6087] ? bpf_trace_run2+0x186/0x4b0 [ 95.725870][ T6087] ? __pfx_bpf_trace_run2+0x10/0x10 [ 95.725897][ T6087] ? __bpf_trace_contention_begin+0xcd/0x130 [ 95.725920][ T6087] __bpf_trace_contention_begin+0xdc/0x130 [ 95.725939][ T6087] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 95.725959][ T6087] ? lock_release+0x4b/0x3e0 [ 95.725990][ T6087] ? ima_match_policy+0x20c3/0x2150 [ 95.726009][ T6087] ? kasan_save_track+0x4f/0x80 [ 95.726035][ T6087] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 95.726055][ T6087] __traceiter_contention_begin+0x77/0xb0 [ 95.726087][ T6087] trace_contention_begin+0x114/0x140 [ 95.726109][ T6087] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 95.726140][ T6087] ? rcu_qs+0xc4/0x170 [ 95.726168][ T6087] ? __pfx_rcu_qs+0x10/0x10 [ 95.726195][ T6087] ? lock_acquire+0x5f/0x360 [ 95.726222][ T6087] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 95.726253][ T6087] ? trace_rcu_utilization+0x47/0x1d0 [ 95.726272][ T6087] ? rcu_note_context_switch+0xdc1/0x1140 [ 95.726298][ T6087] ? down_write+0x162/0x1f0 [ 95.726321][ T6087] queued_spin_lock_slowpath+0x43/0x50 [ 95.726347][ T6087] do_raw_spin_lock+0x21f/0x290 [ 95.726370][ T6087] ? lock_acquire+0x5f/0x360 [ 95.726399][ T6087] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 95.726424][ T6087] ? process_measurement+0x2a1/0x1a40 [ 95.726461][ T6087] raw_spin_rq_lock_nested+0x2a/0x140 [ 95.726494][ T6087] __schedule+0x32f/0x4d30 [ 95.726521][ T6087] ? __pfx_tomoyo_check_open_permission+0x10/0x10 [ 95.726547][ T6087] ? seqcount_lockdep_reader_access+0x175/0x1c0 [ 95.726583][ T6087] ? preempt_schedule_irq+0xb5/0x150 [ 95.726613][ T6087] ? mntput_no_expire+0xb9/0x9d0 [ 95.726640][ T6087] ? __pfx___schedule+0x10/0x10 [ 95.726669][ T6087] ? cpuacct_charge+0x10e/0x320 [ 95.726704][ T6087] ? rcu_is_watching+0x15/0xb0 [ 95.726746][ T6087] preempt_schedule_irq+0xb5/0x150 [ 95.726777][ T6087] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 95.726812][ T6087] ? rcu_irq_exit_check_preempt+0xd6/0x210 [ 95.726848][ T6087] irqentry_exit+0x6f/0x90 [ 95.726876][ T6087] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 95.726899][ T6087] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 [ 95.726929][ T6087] Code: 89 fb e8 23 00 00 00 48 8b 3d e4 43 fa 0b 48 89 de 5b e9 63 5c 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 00 9a 92 65 8b 15 68 4f [ 95.726947][ T6087] RSP: 0018:ffffc90004537a18 EFLAGS: 00000246 [ 95.726968][ T6087] RAX: ffffffff894e5201 RBX: 0000000000000000 RCX: ffff88807deb8000 [ 95.726984][ T6087] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 95.726996][ T6087] RBP: ffffc90004537b30 R08: 0000000000000003 R09: 0000000000000000 [ 95.727010][ T6087] R10: ffffc90004537a80 R11: fffff520008a6f54 R12: 0000000000000001 [ 95.727025][ T6087] R13: ffffc90004537e28 R14: 1ffff920008a6f4c R15: 1ffff920008a6fc5 [ 95.727046][ T6087] ? ____sys_sendmsg+0x81/0x830 [ 95.727074][ T6087] ____sys_sendmsg+0x239/0x830 [ 95.727099][ T6087] ? __pfx_____sys_sendmsg+0x10/0x10 [ 95.727127][ T6087] ? import_iovec+0x74/0xa0 [ 95.727158][ T6087] ___sys_sendmsg+0x21f/0x2a0 [ 95.727181][ T6087] ? __pfx____sys_sendmsg+0x10/0x10 [ 95.727205][ T6087] ? do_raw_spin_lock+0x121/0x290 [ 95.727254][ T6087] __x64_sys_sendmsg+0x19b/0x260 [ 95.727275][ T6087] ? _raw_spin_unlock_irq+0x2e/0x50 [ 95.727301][ T6087] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 95.727328][ T6087] ? rcu_is_watching+0x15/0xb0 [ 95.727367][ T6087] do_syscall_64+0xfa/0x3b0 [ 95.727399][ T6087] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.727419][ T6087] ? clear_bhb_loop+0x60/0xb0 [ 95.727443][ T6087] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.727463][ T6087] RIP: 0033:0x7f7d4bd78999 [ 95.727480][ T6087] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 95.727497][ T6087] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.727518][ T6087] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [ 95.727534][ T6087] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [pid 6087] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0executing program [pid 6085] <... write resumed>) = 1 [pid 6086] exit_group(0 [pid 6089] <... prctl resumed>) = 0 [pid 6089] setpgid(0, 0) = 0 [pid 6088] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6088] <... bpf resumed>) = 4 [pid 6089] <... openat resumed>) = 3 [pid 6088] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6089] write(3, "1000", 4 [pid 6088] <... socket resumed>) = 5 [pid 6089] <... write resumed>) = 4 [pid 6089] close(3 [pid 6088] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6089] <... close resumed>) = 0 [pid 6088] <... openat resumed>) = 6 [pid 6089] write(1, "executing program\n", 18) = 18 [pid 6088] write(6, "3", 1 [pid 6089] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6088] <... write resumed>) = 1 [pid 6089] <... bpf resumed>) = 3 [pid 6088] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6088] exit_group(0) = ? [pid 6089] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6089] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6089] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6088] +++ exited with 0 +++ [pid 6089] write(6, "3", 1 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6088, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6089] <... write resumed>) = 1 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6089] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6089] exit_group(0) = ? [pid 6087] <... sendmsg resumed>) = 28 [pid 6086] <... exit_group resumed>) = ? [pid 6085] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6089] +++ exited with 0 +++ [pid 6087] exit_group(0 [pid 6085] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6087] <... exit_group resumed>) = ? [pid 6087] +++ exited with 0 +++ [pid 6085] exit_group(0) = ? [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6087, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6089, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6090 ./strace-static-x86_64: Process 6090 attached [pid 6090] set_robust_list(0x555556b47660, 24) = 0 [pid 6090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6090] setpgid(0, 0) = 0 [pid 6090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ./strace-static-x86_64: Process 6091 attached ) = 3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6091 [pid 6091] set_robust_list(0x555556b47660, 24) = 0 [pid 6090] write(3, "1000", 4 [pid 6091] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6090] <... write resumed>) = 4 [pid 6091] <... prctl resumed>) = 0 [pid 6091] setpgid(0, 0 [pid 6090] close(3 [pid 6085] +++ exited with 0 +++ [pid 6091] <... setpgid resumed>) = 0 [pid 6090] <... close resumed>) = 0 [pid 6090] write(1, "executing program\n", 18) = 18 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6085, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6091] write(3, "1000", 4) = 4 [pid 6091] close(3 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6091] <... close resumed>) = 0 executing program [pid 6091] write(1, "executing program\n", 18./strace-static-x86_64: Process 6092 attached ) = 18 [pid 6090] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6092 [pid 6092] set_robust_list(0x555556b47660, 24 [pid 6091] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6092] <... set_robust_list resumed>) = 0 [pid 6091] <... bpf resumed>) = 3 [pid 6090] <... bpf resumed>) = 3 [pid 6090] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6091] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6090] <... bpf resumed>) = 4 [pid 6091] <... bpf resumed>) = 4 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6092] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6091] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6090] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6090] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6092] <... prctl resumed>) = 0 [pid 6091] <... socket resumed>) = 5 [pid 6090] <... openat resumed>) = 6 ./strace-static-x86_64: Process 6093 attached [pid 6092] setpgid(0, 0 [pid 6091] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6093 [pid 6092] <... setpgid resumed>) = 0 [pid 6091] <... openat resumed>) = 6 [pid 6090] write(6, "3", 1 [pid 6092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6091] write(6, "3", 1 [pid 6093] set_robust_list(0x555556b47660, 24 [pid 6091] <... write resumed>) = 1 [pid 6090] <... write resumed>) = 1 [pid 6092] <... openat resumed>) = 3 [pid 6091] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6093] <... set_robust_list resumed>) = 0 [pid 6090] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6092] write(3, "1000", 4 [pid 6091] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6093] <... prctl resumed>) = 0 [pid 6092] <... write resumed>) = 4 [pid 6090] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6093] setpgid(0, 0 [pid 6092] close(3 [pid 6091] exit_group(0 [ 95.727547][ T6087] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [ 95.727559][ T6087] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 95.727571][ T6087] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 95.727592][ T6087] [pid 6090] exit_group(0 [pid 6093] <... setpgid resumed>) = 0 [pid 6092] <... close resumed>) = 0 [pid 6091] <... exit_group resumed>) = ? [pid 6090] <... exit_group resumed>) = ? [pid 6093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6092] write(1, "executing program\n", 18 [pid 6091] +++ exited with 0 +++ executing program [pid 6090] +++ exited with 0 +++ [pid 6093] <... openat resumed>) = 3 [pid 6092] <... write resumed>) = 18 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6090, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6093] write(3, "1000", 4 [pid 6092] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6091, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6093] <... write resumed>) = 4 [pid 6092] <... bpf resumed>) = 3 [pid 6086] +++ exited with 0 +++ [pid 6093] close(3 [pid 6092] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6086, si_uid=0, si_status=0, si_utime=0, si_stime=55 /* 0.55 s */} --- [pid 6093] <... close resumed>) = 0 [pid 6092] <... bpf resumed>) = 4 [pid 6093] write(1, "executing program\n", 18executing program [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6094 attached [pid 6093] <... write resumed>) = 18 [pid 6092] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6094 ./strace-static-x86_64: Process 6095 attached [pid 6094] set_robust_list(0x555556b47660, 24 [pid 6093] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6095] set_robust_list(0x555556b47660, 24 [pid 6094] <... set_robust_list resumed>) = 0 [pid 6093] <... bpf resumed>) = 3 [pid 6092] <... socket resumed>) = 5 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6095 [pid 6095] <... set_robust_list resumed>) = 0 [pid 6094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6093] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6092] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6095] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6094] <... prctl resumed>) = 0 [pid 6092] <... openat resumed>) = 6 [pid 6094] setpgid(0, 0) = 0 [pid 6095] <... prctl resumed>) = 0 [pid 6095] setpgid(0, 0 [pid 6094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6093] <... bpf resumed>) = 4 [pid 6092] write(6, "3", 1 [pid 6095] <... setpgid resumed>) = 0 [pid 6094] <... openat resumed>) = 3 [pid 6093] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6092] <... write resumed>) = 1 [pid 6095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6094] write(3, "1000", 4 [pid 6093] <... socket resumed>) = 5 [pid 6092] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6096 attached [pid 6095] <... openat resumed>) = 3 [pid 6094] <... write resumed>) = 4 [pid 6093] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6092] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6094] close(3 [pid 6093] <... openat resumed>) = 6 [pid 6092] exit_group(0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6096 [pid 6096] set_robust_list(0x555556b47660, 24 [pid 6095] write(3, "1000", 4 [pid 6094] <... close resumed>) = 0 [pid 6096] <... set_robust_list resumed>) = 0 [pid 6094] write(1, "executing program\n", 18 [pid 6093] write(6, "3", 1executing program [pid 6092] <... exit_group resumed>) = ? [pid 6096] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6095] <... write resumed>) = 4 [pid 6094] <... write resumed>) = 18 [pid 6093] <... write resumed>) = 1 [pid 6094] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6093] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6096] <... prctl resumed>) = 0 [pid 6095] close(3 [pid 6093] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6096] setpgid(0, 0 [pid 6095] <... close resumed>) = 0 [pid 6093] exit_group(0 [pid 6096] <... setpgid resumed>) = 0 [pid 6095] write(1, "executing program\n", 18 [pid 6092] +++ exited with 0 +++ executing program [pid 6096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6095] <... write resumed>) = 18 [pid 6093] <... exit_group resumed>) = ? [pid 6096] <... openat resumed>) = 3 [pid 6095] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6094] <... bpf resumed>) = 3 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6092, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6096] write(3, "1000", 4 [pid 6094] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6096] <... write resumed>) = 4 [pid 6094] <... bpf resumed>) = 4 [pid 6093] +++ exited with 0 +++ executing program [pid 6096] close(3 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6093, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6096] <... close resumed>) = 0 [pid 6094] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6096] write(1, "executing program\n", 18 [pid 6094] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6096] <... write resumed>) = 18 [pid 6094] <... openat resumed>) = 6 [pid 6094] write(6, "3", 1 [pid 6096] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6095] <... bpf resumed>) = 3 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6095] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6094] <... write resumed>) = 1 [pid 6096] <... bpf resumed>) = 3 [pid 6095] <... bpf resumed>) = 4 [pid 6096] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6095] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6094] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6096] <... bpf resumed>) = 4 [pid 6095] <... socket resumed>) = 5 [pid 6094] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6096] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6095] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6094] exit_group(0 [pid 6096] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6095] <... openat resumed>) = 6 [pid 6094] <... exit_group resumed>) = ? [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6096] <... openat resumed>) = 6 [pid 6095] write(6, "3", 1./strace-static-x86_64: Process 6097 attached [pid 6094] +++ exited with 0 +++ [pid 6096] write(6, "3", 1 [pid 6095] <... write resumed>) = 1 [pid 6096] <... write resumed>) = 1 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6096] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6095] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6094, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6097] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6097 [pid 6097] <... set_robust_list resumed>) = 0 [pid 6096] <... sendmsg resumed>) = 28 [pid 6097] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6095] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6097] <... prctl resumed>) = 0 [pid 6096] exit_group(0 [pid 6097] setpgid(0, 0) = 0 [pid 6096] <... exit_group resumed>) = ? [pid 6095] exit_group(0 [pid 6097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6097] write(3, "1000", 4) = 4 [pid 6097] close(3./strace-static-x86_64: Process 6098 attached [pid 6096] +++ exited with 0 +++ [pid 6095] <... exit_group resumed>) = ? [pid 5849] <... restart_syscall resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6096, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6097] <... close resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program [pid 6098] set_robust_list(0x555556b47660, 24 [pid 6097] write(1, "executing program\n", 18 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6098 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6099 attached [pid 6098] <... set_robust_list resumed>) = 0 [pid 6097] <... write resumed>) = 18 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6099 ./strace-static-x86_64: Process 6100 attached [pid 6097] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6100] set_robust_list(0x555556b47660, 24 [pid 6099] set_robust_list(0x555556b47660, 24 [pid 6098] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6095] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6095, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6097] <... bpf resumed>) = 3 [pid 6097] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6100] <... set_robust_list resumed>) = 0 [pid 6099] <... set_robust_list resumed>) = 0 [pid 6098] <... prctl resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6100 [pid 6099] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6098] setpgid(0, 0 [pid 6100] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6099] <... prctl resumed>) = 0 [pid 6100] <... prctl resumed>) = 0 [pid 6098] <... setpgid resumed>) = 0 [pid 6097] <... bpf resumed>) = 4 [pid 6099] setpgid(0, 0 [pid 6098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6099] <... setpgid resumed>) = 0 [pid 6100] setpgid(0, 0 [pid 6099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6100] <... setpgid resumed>) = 0 [pid 6098] <... openat resumed>) = 3 [pid 6097] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6099] <... openat resumed>) = 3 [pid 6098] write(3, "1000", 4 [pid 6097] <... socket resumed>) = 5 [pid 6098] <... write resumed>) = 4 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6097] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6100] <... openat resumed>) = 3 [pid 6099] write(3, "1000", 4 [pid 6098] close(3 [pid 6099] <... write resumed>) = 4 [pid 6097] <... openat resumed>) = 6 [pid 6098] <... close resumed>) = 0 [pid 6100] write(3, "1000", 4 [pid 6098] write(1, "executing program\n", 18executing program [pid 6097] write(6, "3", 1 [pid 6100] <... write resumed>) = 4 [pid 6098] <... write resumed>) = 18 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6100] close(3 [pid 6098] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6097] <... write resumed>) = 1 [pid 6100] <... close resumed>) = 0 [pid 6097] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 6101 attached [pid 6100] write(1, "executing program\n", 18 [pid 6099] close(3executing program ) = 0 [pid 6097] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6101 [pid 6101] set_robust_list(0x555556b47660, 24 [pid 6100] <... write resumed>) = 18 [pid 6097] exit_group(0 [pid 6101] <... set_robust_list resumed>) = 0 [pid 6100] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6097] <... exit_group resumed>) = ? [pid 6101] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6099] write(1, "executing program\n", 18executing program ) = 18 [pid 6099] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6098] <... bpf resumed>) = 3 [pid 6099] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6101] <... prctl resumed>) = 0 [pid 6098] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6101] setpgid(0, 0) = 0 [pid 6100] <... bpf resumed>) = 3 [pid 6101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6100] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6101] <... openat resumed>) = 3 [pid 6097] +++ exited with 0 +++ [pid 6098] <... bpf resumed>) = 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6097, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6101] write(3, "1000", 4 [pid 6100] <... bpf resumed>) = 4 [pid 6099] <... bpf resumed>) = 4 [pid 6098] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6101] <... write resumed>) = 4 [pid 6100] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6101] close(3 [pid 6099] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6098] <... socket resumed>) = 5 [pid 6101] <... close resumed>) = 0 [pid 6100] <... socket resumed>) = 5 [pid 6099] <... socket resumed>) = 5 [pid 5852] <... restart_syscall resumed>) = 0 [pid 6098] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6101] write(1, "executing program\n", 18 [pid 6100] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6099] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6098] <... openat resumed>) = 6 [pid 6099] <... openat resumed>) = 6 [pid 6098] write(6, "3", 1 [pid 6099] write(6, "3", 1 [pid 6098] <... write resumed>) = 1 [pid 6099] <... write resumed>) = 1 [pid 6098] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6099] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6098] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 6099] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6098] exit_group(0 [pid 6099] exit_group(0 [pid 6101] <... write resumed>) = 18 [pid 6099] <... exit_group resumed>) = ? [pid 6098] <... exit_group resumed>) = ? [pid 6101] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6100] <... openat resumed>) = 6 [pid 6101] <... bpf resumed>) = 3 [pid 6100] write(6, "3", 1 [pid 6098] +++ exited with 0 +++ [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6102 attached [pid 6101] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6100] <... write resumed>) = 1 [pid 6100] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6102 [pid 6102] set_robust_list(0x555556b47660, 24 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6098, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6102] <... set_robust_list resumed>) = 0 [pid 6100] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6099] +++ exited with 0 +++ [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6102] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6101] <... bpf resumed>) = 4 [pid 6100] exit_group(0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6102] <... prctl resumed>) = 0 [pid 6101] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6100] <... exit_group resumed>) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6099, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6102] setpgid(0, 0 [pid 6101] <... socket resumed>) = 5 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6102] <... setpgid resumed>) = 0 [pid 6101] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6103 attached [pid 6102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6101] <... openat resumed>) = 6 [pid 6103] set_robust_list(0x555556b47660, 24./strace-static-x86_64: Process 6104 attached [pid 6102] <... openat resumed>) = 3 [pid 6101] write(6, "3", 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6103 [pid 6104] set_robust_list(0x555556b47660, 24 [pid 6103] <... set_robust_list resumed>) = 0 [pid 6102] write(3, "1000", 4 [pid 6101] <... write resumed>) = 1 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6104 [pid 6104] <... set_robust_list resumed>) = 0 [pid 6103] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6102] <... write resumed>) = 4 [pid 6101] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6104] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6103] <... prctl resumed>) = 0 [pid 6102] close(3 [pid 6101] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 6104] <... prctl resumed>) = 0 [pid 6103] setpgid(0, 0 [pid 6102] <... close resumed>) = 0 [pid 6101] exit_group(0 [pid 6104] setpgid(0, 0 [pid 6103] <... setpgid resumed>) = 0 [pid 6102] write(1, "executing program\n", 18 [pid 6101] <... exit_group resumed>) = ? [pid 6104] <... setpgid resumed>) = 0 [pid 6103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6102] <... write resumed>) = 18 [pid 6101] +++ exited with 0 +++ [pid 6100] +++ exited with 0 +++ [pid 6104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6102] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6101, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6100, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6104] <... openat resumed>) = 3 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6103] <... openat resumed>) = 3 [pid 6104] write(3, "1000", 4 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6105 attached [pid 6104] <... write resumed>) = 4 [pid 6103] write(3, "1000", 4 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6104] close(3 [pid 6103] <... write resumed>) = 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6105 [pid 6104] <... close resumed>) = 0 [pid 6103] close(3) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6102] <... bpf resumed>) = 3 executing program executing program [pid 6105] set_robust_list(0x555556b47660, 24 [pid 6104] write(1, "executing program\n", 18 [pid 6103] write(1, "executing program\n", 18 [pid 6102] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 6106 attached [pid 6105] <... set_robust_list resumed>) = 0 [pid 6104] <... write resumed>) = 18 [pid 6103] <... write resumed>) = 18 [pid 6106] set_robust_list(0x555556b47660, 24 [pid 6104] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6106 [pid 6105] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6103] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6102] <... bpf resumed>) = 4 [pid 6106] <... set_robust_list resumed>) = 0 [pid 6106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6105] <... prctl resumed>) = 0 [pid 6104] <... bpf resumed>) = 3 [pid 6106] setpgid(0, 0 [pid 6105] setpgid(0, 0 [pid 6106] <... setpgid resumed>) = 0 [pid 6106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6106] write(3, "1000", 4 [pid 6103] <... bpf resumed>) = 3 [pid 6102] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6106] <... write resumed>) = 4 [pid 6106] close(3 [pid 6105] <... setpgid resumed>) = 0 [pid 6102] <... socket resumed>) = 5 [pid 6106] <... close resumed>) = 0 executing program [pid 6105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6106] write(1, "executing program\n", 18) = 18 [pid 6102] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6106] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6105] <... openat resumed>) = 3 [pid 6105] write(3, "1000", 4 [pid 6104] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6103] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6102] <... openat resumed>) = 6 [pid 6105] <... write resumed>) = 4 [pid 6106] <... bpf resumed>) = 3 [pid 6106] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6105] close(3 [pid 6104] <... bpf resumed>) = 4 [pid 6102] write(6, "3", 1 [pid 6105] <... close resumed>) = 0 [pid 6103] <... bpf resumed>) = 4 [pid 6106] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6106] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6102] <... write resumed>) = 1 [pid 6103] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6105] write(1, "executing program\n", 18executing program [pid 6104] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6106] <... openat resumed>) = 6 [pid 6103] <... socket resumed>) = 5 [pid 6102] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6105] <... write resumed>) = 18 [pid 6104] <... socket resumed>) = 5 [pid 6103] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6102] <... sendmsg resumed>) = 28 [pid 6106] write(6, "3", 1 [pid 6105] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6104] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6106] <... write resumed>) = 1 [pid 6103] <... openat resumed>) = 6 [pid 6102] exit_group(0 [pid 6104] <... openat resumed>) = 6 [pid 6106] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6103] write(6, "3", 1 [pid 6106] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6105] <... bpf resumed>) = 3 [pid 6104] write(6, "3", 1 [pid 6103] <... write resumed>) = 1 [pid 6102] <... exit_group resumed>) = ? [pid 6106] exit_group(0 [pid 6105] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6104] <... write resumed>) = 1 [pid 6106] <... exit_group resumed>) = ? [pid 6105] <... bpf resumed>) = 4 [pid 6104] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6103] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6102] +++ exited with 0 +++ [pid 6104] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6103] exit_group(0 [pid 6105] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6104] exit_group(0 [pid 6103] <... exit_group resumed>) = ? [pid 6106] +++ exited with 0 +++ [pid 6105] <... socket resumed>) = 5 [pid 6104] <... exit_group resumed>) = ? [pid 6103] +++ exited with 0 +++ [pid 6105] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6102, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6105] write(6, "3", 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6103, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6106, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6105] <... write resumed>) = 1 [pid 6104] +++ exited with 0 +++ [pid 6105] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6104, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6105] exit_group(0 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6105] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 6107 attached [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... restart_syscall resumed>) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6108 attached [pid 6107] set_robust_list(0x555556b47660, 24 [pid 6105] +++ exited with 0 +++ [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6107 [pid 6108] set_robust_list(0x555556b47660, 24 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6105, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6108] <... set_robust_list resumed>) = 0 [pid 6107] <... set_robust_list resumed>) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6108 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6109 attached [pid 6109] set_robust_list(0x555556b47660, 24 [pid 6108] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6109 [pid 6108] <... prctl resumed>) = 0 [pid 6108] setpgid(0, 0) = 0 [pid 6108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6110 attached ) = 3 [pid 6109] <... set_robust_list resumed>) = 0 [pid 6107] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6110] set_robust_list(0x555556b47660, 24 [pid 6109] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6108] write(3, "1000", 4 [pid 6107] <... prctl resumed>) = 0 [pid 6109] <... prctl resumed>) = 0 [pid 6110] <... set_robust_list resumed>) = 0 [pid 6108] <... write resumed>) = 4 [pid 6107] setpgid(0, 0 [pid 6109] setpgid(0, 0 [pid 6107] <... setpgid resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6110 [pid 6109] <... setpgid resumed>) = 0 [pid 6110] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6108] close(3 [pid 6107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6110] <... prctl resumed>) = 0 [pid 6109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6108] <... close resumed>) = 0 executing program [pid 6110] setpgid(0, 0 [pid 6108] write(1, "executing program\n", 18 [pid 6110] <... setpgid resumed>) = 0 [pid 6108] <... write resumed>) = 18 [pid 6107] <... openat resumed>) = 3 [pid 6110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6109] <... openat resumed>) = 3 [pid 6108] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6110] <... openat resumed>) = 3 [pid 6109] write(3, "1000", 4 [pid 6107] write(3, "1000", 4 [pid 6109] <... write resumed>) = 4 [pid 6107] <... write resumed>) = 4 [pid 6110] write(3, "1000", 4 [pid 6109] close(3 [pid 6107] close(3 [pid 6110] <... write resumed>) = 4 [pid 6107] <... close resumed>) = 0 [pid 6110] close(3executing program [pid 6109] <... close resumed>) = 0 [pid 6107] write(1, "executing program\n", 18 [pid 6110] <... close resumed>) = 0 executing program [pid 6109] write(1, "executing program\n", 18 [pid 6107] <... write resumed>) = 18 [pid 6110] write(1, "executing program\n", 18 [pid 6109] <... write resumed>) = 18 [pid 6107] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6109] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148executing program [pid 6110] <... write resumed>) = 18 [pid 6108] <... bpf resumed>) = 3 [pid 6108] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6110] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6108] <... bpf resumed>) = 4 [pid 6108] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6110] <... bpf resumed>) = 3 [pid 6108] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6108] write(6, "3", 1) = 1 [pid 6108] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6108] exit_group(0) = ? [pid 6110] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6109] <... bpf resumed>) = 3 [pid 6107] <... bpf resumed>) = 3 [pid 6109] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6107] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6111 attached [pid 6108] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6108, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6111 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6111] set_robust_list(0x555556b47660, 24) = 0 [pid 6110] <... bpf resumed>) = 4 [pid 6111] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6109] <... bpf resumed>) = 4 [pid 6107] <... bpf resumed>) = 4 [pid 6111] <... prctl resumed>) = 0 [pid 6110] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6111] setpgid(0, 0 [pid 6110] <... socket resumed>) = 5 [pid 6109] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6107] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6111] <... setpgid resumed>) = 0 [pid 6111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6110] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6111] write(3, "1000", 4 [pid 6109] <... socket resumed>) = 5 [pid 6107] <... socket resumed>) = 5 [pid 6111] <... write resumed>) = 4 [pid 6111] close(3 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6111] <... close resumed>) = 0 executing program [pid 6111] write(1, "executing program\n", 18) = 18 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6111] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6110] <... openat resumed>) = 6 [pid 6109] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6107] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6112 attached [pid 6110] write(6, "3", 1 [pid 6109] <... openat resumed>) = 6 [pid 6107] <... openat resumed>) = 6 [pid 6110] <... write resumed>) = 1 [pid 6109] write(6, "3", 1 [pid 6107] write(6, "3", 1 [pid 6110] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6109] <... write resumed>) = 1 [pid 6107] <... write resumed>) = 1 [pid 6112] set_robust_list(0x555556b47660, 24 [pid 6111] <... bpf resumed>) = 3 [pid 6112] <... set_robust_list resumed>) = 0 [pid 6110] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6109] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6107] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6112 [pid 6111] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6112] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6110] exit_group(0 [pid 6109] <... sendmsg resumed>) = 28 [pid 6107] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6112] <... prctl resumed>) = 0 [pid 6111] <... bpf resumed>) = 4 [pid 6110] <... exit_group resumed>) = ? [pid 6109] exit_group(0 [pid 6107] exit_group(0 [pid 6112] setpgid(0, 0 [pid 6111] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6109] <... exit_group resumed>) = ? [pid 6107] <... exit_group resumed>) = ? [pid 6112] <... setpgid resumed>) = 0 [pid 6111] <... socket resumed>) = 5 [pid 6112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6110] +++ exited with 0 +++ [pid 6107] +++ exited with 0 +++ [pid 6112] <... openat resumed>) = 3 [pid 6111] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6112] write(3, "1000", 4 [pid 6111] <... openat resumed>) = 6 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6107, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6110, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6112] <... write resumed>) = 4 [pid 6111] write(6, "3", 1 [pid 6109] +++ exited with 0 +++ [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6112] close(3 [pid 6111] <... write resumed>) = 1 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6109, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6112] <... close resumed>) = 0 [pid 6111] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0executing program [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6112] write(1, "executing program\n", 18 [pid 6111] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6112] <... write resumed>) = 18 [pid 6111] exit_group(0 [pid 6112] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6111] <... exit_group resumed>) = ? [pid 5845] <... restart_syscall resumed>) = 0 [pid 6112] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6113 attached [pid 6111] +++ exited with 0 +++ [pid 5846] <... restart_syscall resumed>) = 0 [pid 6113] set_robust_list(0x555556b47660, 24 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6113 [pid 6113] <... set_robust_list resumed>) = 0 [pid 6112] <... bpf resumed>) = 4 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6111, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6113] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 6114 attached ) = 0 [pid 6112] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6114] set_robust_list(0x555556b47660, 24 [pid 6113] setpgid(0, 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6114] <... set_robust_list resumed>) = 0 [pid 6112] <... socket resumed>) = 5 ./strace-static-x86_64: Process 6115 attached [pid 6113] <... setpgid resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6114 [pid 6114] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6115 [pid 6113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6112] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6115] set_robust_list(0x555556b47660, 24 [pid 6114] <... prctl resumed>) = 0 [pid 6114] setpgid(0, 0 [pid 6112] <... openat resumed>) = 6 [pid 6114] <... setpgid resumed>) = 0 [pid 6113] <... openat resumed>) = 3 [pid 6114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6115] <... set_robust_list resumed>) = 0 [pid 6113] write(3, "1000", 4 [pid 6112] write(6, "3", 1 [pid 6115] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6114] <... openat resumed>) = 3 [pid 6113] <... write resumed>) = 4 [pid 6112] <... write resumed>) = 1 [pid 6115] <... prctl resumed>) = 0 [pid 6113] close(3 [pid 6112] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6115] setpgid(0, 0 [pid 6113] <... close resumed>) = 0 [pid 6112] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6115] <... setpgid resumed>) = 0 executing program [pid 6113] write(1, "executing program\n", 18 [pid 6115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6114] write(3, "1000", 4 [pid 6113] <... write resumed>) = 18 [pid 6112] exit_group(0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6114] <... write resumed>) = 4 [pid 6113] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6115] <... openat resumed>) = 3 [pid 6114] close(3 [pid 6112] <... exit_group resumed>) = ? [pid 6114] <... close resumed>) = 0 [pid 6113] <... bpf resumed>) = 3 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6112] +++ exited with 0 +++ [pid 6115] write(3, "1000", 4 [pid 6114] write(1, "executing program\n", 18 [pid 6115] <... write resumed>) = 4 executing program executing program [pid 6115] close(3 [pid 6114] <... write resumed>) = 18 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6112, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6115] <... close resumed>) = 0 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6115] write(1, "executing program\n", 18) = 18 [pid 6114] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6116 attached [pid 6115] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6113] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6116] set_robust_list(0x555556b47660, 24 [pid 6115] <... bpf resumed>) = 3 [pid 6114] <... bpf resumed>) = 3 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6116 [pid 6114] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6116] <... set_robust_list resumed>) = 0 [pid 6116] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6113] <... bpf resumed>) = 4 [pid 6116] <... prctl resumed>) = 0 [pid 6114] <... bpf resumed>) = 4 [pid 6115] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6114] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6113] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6115] <... bpf resumed>) = 4 [pid 6114] <... socket resumed>) = 5 [pid 6113] <... socket resumed>) = 5 [pid 6116] setpgid(0, 0 [pid 6115] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6114] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6117 attached [pid 6116] <... setpgid resumed>) = 0 [pid 6115] <... socket resumed>) = 5 [pid 6113] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6117] set_robust_list(0x555556b47660, 24 [pid 6115] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6114] <... openat resumed>) = 6 [pid 6116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6113] <... openat resumed>) = 6 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6117 [pid 6116] <... openat resumed>) = 3 [pid 6115] <... openat resumed>) = 6 [pid 6114] write(6, "3", 1 [pid 6113] write(6, "3", 1 [pid 6116] write(3, "1000", 4 [pid 6115] write(6, "3", 1 [pid 6114] <... write resumed>) = 1 [pid 6113] <... write resumed>) = 1 [pid 6116] <... write resumed>) = 4 [pid 6115] <... write resumed>) = 1 [pid 6114] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6116] close(3 [pid 6115] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6113] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6116] <... close resumed>) = 0 [pid 6115] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6114] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6116] write(1, "executing program\n", 18 [pid 6115] exit_group(0 [pid 6113] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 6117] <... set_robust_list resumed>) = 0 [pid 6116] <... write resumed>) = 18 [pid 6115] <... exit_group resumed>) = ? [pid 6114] exit_group(0 [pid 6113] exit_group(0 [pid 6116] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6114] <... exit_group resumed>) = ? [pid 6113] <... exit_group resumed>) = ? [pid 6117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6117] setpgid(0, 0) = 0 [pid 6117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6117] write(3, "1000", 4 [pid 6115] +++ exited with 0 +++ [pid 6117] <... write resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6115, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6117] close(3) = 0 [pid 6117] write(1, "executing program\n", 18executing program ) = 18 [pid 6116] <... bpf resumed>) = 3 [pid 6117] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6116] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6113] +++ exited with 0 +++ [pid 6116] <... bpf resumed>) = 4 [pid 6114] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6113, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6116] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6114, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6116] <... socket resumed>) = 5 [pid 6116] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6116] write(6, "3", 1) = 1 [pid 6116] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6116] exit_group(0) = ? [pid 6116] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6116, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6117] <... bpf resumed>) = 3 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6117] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6117] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6117] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6120 attached ./strace-static-x86_64: Process 6119 attached ./strace-static-x86_64: Process 6118 attached [pid 6117] <... openat resumed>) = 6 [pid 6120] set_robust_list(0x555556b47660, 24 [pid 6119] set_robust_list(0x555556b47660, 24./strace-static-x86_64: Process 6121 attached [pid 6118] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6119 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6118 [pid 6121] set_robust_list(0x555556b47660, 24 [pid 6120] <... set_robust_list resumed>) = 0 [pid 6119] <... set_robust_list resumed>) = 0 [pid 6118] <... set_robust_list resumed>) = 0 [pid 6117] write(6, "3", 1 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6120 [pid 6121] <... set_robust_list resumed>) = 0 [pid 6120] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6119] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6121 [pid 6118] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6117] <... write resumed>) = 1 [pid 6121] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6120] <... prctl resumed>) = 0 [pid 6118] <... prctl resumed>) = 0 [pid 6119] <... prctl resumed>) = 0 [pid 6120] setpgid(0, 0 [pid 6121] <... prctl resumed>) = 0 [pid 6119] setpgid(0, 0 [pid 6118] setpgid(0, 0 [pid 6121] setpgid(0, 0 [pid 6120] <... setpgid resumed>) = 0 [pid 6119] <... setpgid resumed>) = 0 [pid 6118] <... setpgid resumed>) = 0 [pid 6117] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6121] <... setpgid resumed>) = 0 [pid 6119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6117] exit_group(0 [pid 6118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6119] <... openat resumed>) = 3 [pid 6117] <... exit_group resumed>) = ? [pid 6120] <... openat resumed>) = 3 [pid 6121] <... openat resumed>) = 3 [pid 6120] write(3, "1000", 4 [pid 6119] write(3, "1000", 4 [pid 6118] <... openat resumed>) = 3 [pid 6121] write(3, "1000", 4 [pid 6120] <... write resumed>) = 4 [pid 6119] <... write resumed>) = 4 [pid 6121] <... write resumed>) = 4 [pid 6120] close(3 [pid 6119] close(3 [pid 6118] write(3, "1000", 4 [pid 6121] close(3 [pid 6120] <... close resumed>) = 0 [pid 6119] <... close resumed>) = 0 [pid 6118] <... write resumed>) = 4 executing program executing program [pid 6117] +++ exited with 0 +++ [pid 6121] <... close resumed>) = 0 [pid 6120] write(1, "executing program\n", 18 [pid 6119] write(1, "executing program\n", 18 [pid 6118] close(3 [pid 6121] write(1, "executing program\n", 18executing program [pid 6120] <... write resumed>) = 18 [pid 6119] <... write resumed>) = 18 [pid 6118] <... close resumed>) = 0 [pid 6121] <... write resumed>) = 18 [pid 6120] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6121] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6119] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6118] write(1, "executing program\n", 18executing program ) = 18 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6117, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 6118] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6122 attached [pid 6120] <... bpf resumed>) = 3 [pid 6119] <... bpf resumed>) = 3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6122 [pid 6121] <... bpf resumed>) = 3 [pid 6118] <... bpf resumed>) = 3 [pid 6120] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6122] set_robust_list(0x555556b47660, 24 [pid 6121] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6119] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6118] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6122] <... set_robust_list resumed>) = 0 [pid 6122] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6120] <... bpf resumed>) = 4 [pid 6118] <... bpf resumed>) = 4 [pid 6121] <... bpf resumed>) = 4 [pid 6122] <... prctl resumed>) = 0 [pid 6119] <... bpf resumed>) = 4 [pid 6122] setpgid(0, 0 [pid 6121] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6118] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6122] <... setpgid resumed>) = 0 [pid 6121] <... socket resumed>) = 5 [pid 6120] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6119] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6118] <... socket resumed>) = 5 [pid 6122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6121] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6120] <... socket resumed>) = 5 [pid 6119] <... socket resumed>) = 5 [pid 6122] <... openat resumed>) = 3 [pid 6121] <... openat resumed>) = 6 [pid 6119] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6118] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6122] write(3, "1000", 4 [pid 6121] write(6, "3", 1 [pid 6120] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6119] <... openat resumed>) = 6 [pid 6118] <... openat resumed>) = 6 [pid 6122] <... write resumed>) = 4 [pid 6121] <... write resumed>) = 1 [pid 6120] <... openat resumed>) = 6 [pid 6119] write(6, "3", 1 [pid 6122] close(3 [pid 6121] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6120] write(6, "3", 1 [pid 6118] write(6, "3", 1 [pid 6122] <... close resumed>) = 0 [pid 6121] <... sendmsg resumed>) = 28 [pid 6120] <... write resumed>) = 1 [pid 6119] <... write resumed>) = 1 [pid 6118] <... write resumed>) = 1 executing program [pid 6122] write(1, "executing program\n", 18 [pid 6121] exit_group(0 [pid 6120] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6119] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6118] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6122] <... write resumed>) = 18 [pid 6121] <... exit_group resumed>) = ? [pid 6120] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6119] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6118] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6122] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6120] exit_group(0 [pid 6119] exit_group(0 [pid 6118] exit_group(0 [pid 6122] <... bpf resumed>) = 3 [pid 6121] +++ exited with 0 +++ [pid 6120] <... exit_group resumed>) = ? [pid 6119] <... exit_group resumed>) = ? [pid 6118] <... exit_group resumed>) = ? [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6121, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6119] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6119, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6122] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6118] +++ exited with 0 +++ [pid 5852] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6120] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6118, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6122] <... bpf resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6120, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6122] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6124 attached [pid 6122] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6123 attached [pid 6124] set_robust_list(0x555556b47660, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6123 [pid 6124] <... set_robust_list resumed>) = 0 [pid 6123] set_robust_list(0x555556b47660, 24 [pid 6122] <... openat resumed>) = 6 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6124 [pid 6124] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6123] <... set_robust_list resumed>) = 0 [pid 6122] write(6, "3", 1 [pid 6124] <... prctl resumed>) = 0 [pid 6123] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6122] <... write resumed>) = 1 [pid 6124] setpgid(0, 0 [pid 6123] <... prctl resumed>) = 0 [pid 6122] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6124] <... setpgid resumed>) = 0 [pid 6123] setpgid(0, 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6123] <... setpgid resumed>) = 0 [pid 6122] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6122] exit_group(0./strace-static-x86_64: Process 6125 attached [pid 6124] <... openat resumed>) = 3 [pid 6123] <... openat resumed>) = 3 [pid 6122] <... exit_group resumed>) = ? [pid 6125] set_robust_list(0x555556b47660, 24 [pid 6124] write(3, "1000", 4 [pid 6123] write(3, "1000", 4 [pid 6122] +++ exited with 0 +++ [pid 6125] <... set_robust_list resumed>) = 0 [pid 6124] <... write resumed>) = 4 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6125 [pid 6125] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6124] close(3 [pid 6123] <... write resumed>) = 4 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6122, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6124] <... close resumed>) = 0 executing program [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6124] write(1, "executing program\n", 18) = 18 [pid 6125] <... prctl resumed>) = 0 executing program [pid 6124] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6123] close(3 [pid 6125] setpgid(0, 0) = 0 [pid 6123] <... close resumed>) = 0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6123] write(1, "executing program\n", 18 [pid 6124] <... bpf resumed>) = 3 [pid 6123] <... write resumed>) = 18 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6126 attached [pid 6125] <... openat resumed>) = 3 [pid 6124] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6123] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6125] write(3, "1000", 4) = 4 [pid 6124] <... bpf resumed>) = 4 [pid 6126] set_robust_list(0x555556b47660, 24 [pid 6125] close(3 [pid 6124] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6123] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 6127 attached [pid 6126] <... set_robust_list resumed>) = 0 [pid 6125] <... close resumed>) = 0 [pid 6124] <... socket resumed>) = 5 executing program [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6126 [pid 6127] set_robust_list(0x555556b47660, 24 [pid 6126] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6125] write(1, "executing program\n", 18 [pid 6124] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6123] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6127] <... set_robust_list resumed>) = 0 [pid 6126] <... prctl resumed>) = 0 [pid 6127] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6126] setpgid(0, 0 [pid 6125] <... write resumed>) = 18 [pid 6124] <... openat resumed>) = 6 [pid 6123] <... bpf resumed>) = 4 [pid 6127] <... prctl resumed>) = 0 [pid 6126] <... setpgid resumed>) = 0 [pid 6125] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6127 [pid 6127] setpgid(0, 0 [pid 6126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6125] <... bpf resumed>) = 3 [pid 6124] write(6, "3", 1 [pid 6123] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6127] <... setpgid resumed>) = 0 [pid 6126] <... openat resumed>) = 3 [pid 6125] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6124] <... write resumed>) = 1 [pid 6123] <... socket resumed>) = 5 [pid 6127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6126] write(3, "1000", 4 [pid 6125] <... bpf resumed>) = 4 [pid 6123] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6127] <... openat resumed>) = 3 [pid 6126] <... write resumed>) = 4 [pid 6125] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6124] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6123] <... openat resumed>) = 6 [pid 6127] write(3, "1000", 4 [pid 6126] close(3 [pid 6125] <... socket resumed>) = 5 [pid 6123] write(6, "3", 1 [pid 6127] <... write resumed>) = 4 [pid 6126] <... close resumed>) = 0 [pid 6125] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6124] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6123] <... write resumed>) = 1 [pid 6127] close(3executing program [pid 6126] write(1, "executing program\n", 18 [pid 6125] <... openat resumed>) = 6 [pid 6123] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6127] <... close resumed>) = 0 [pid 6126] <... write resumed>) = 18 [pid 6125] write(6, "3", 1 [pid 6123] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 6127] write(1, "executing program\n", 18 [pid 6126] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6125] <... write resumed>) = 1 [pid 6124] exit_group(0 [pid 6123] exit_group(0 [pid 6127] <... write resumed>) = 18 [pid 6125] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6124] <... exit_group resumed>) = ? [pid 6127] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6123] <... exit_group resumed>) = ? [pid 6127] <... bpf resumed>) = 3 [pid 6125] <... sendmsg resumed>) = 28 [pid 6124] +++ exited with 0 +++ [pid 6125] exit_group(0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6124, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6125] <... exit_group resumed>) = ? [pid 6123] +++ exited with 0 +++ [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6127] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6126] <... bpf resumed>) = 3 [pid 6125] +++ exited with 0 +++ [pid 5852] <... restart_syscall resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6123, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6125, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6128 attached [pid 6127] <... bpf resumed>) = 4 [pid 6126] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6128 ./strace-static-x86_64: Process 6129 attached [pid 6129] set_robust_list(0x555556b47660, 24 [pid 6128] set_robust_list(0x555556b47660, 24 [pid 6127] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6129 [pid 6129] <... set_robust_list resumed>) = 0 [pid 6129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6128] <... set_robust_list resumed>) = 0 [pid 6127] <... socket resumed>) = 5 [pid 6126] <... bpf resumed>) = 4 [pid 6129] <... prctl resumed>) = 0 [pid 6129] setpgid(0, 0./strace-static-x86_64: Process 6130 attached ) = 0 [pid 6128] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6127] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6126] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6130] set_robust_list(0x555556b47660, 24 [pid 6128] <... prctl resumed>) = 0 [pid 6129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6127] <... openat resumed>) = 6 [pid 6126] <... socket resumed>) = 5 [pid 6130] <... set_robust_list resumed>) = 0 [pid 6129] <... openat resumed>) = 3 [pid 6128] setpgid(0, 0 [pid 6127] write(6, "3", 1 [pid 6126] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6130 [pid 6130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6129] write(3, "1000", 4 [pid 6128] <... setpgid resumed>) = 0 [pid 6127] <... write resumed>) = 1 [pid 6126] <... openat resumed>) = 6 [pid 6130] setpgid(0, 0 [pid 6129] <... write resumed>) = 4 [pid 6128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6127] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6130] <... setpgid resumed>) = 0 [pid 6129] close(3 [pid 6130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6129] <... close resumed>) = 0 [pid 6128] <... openat resumed>) = 3 [pid 6127] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6126] write(6, "3", 1 [pid 6130] <... openat resumed>) = 3 [pid 6129] write(1, "executing program\n", 18executing program [pid 6128] write(3, "1000", 4 [pid 6127] exit_group(0 [pid 6126] <... write resumed>) = 1 [pid 6130] write(3, "1000", 4 [pid 6129] <... write resumed>) = 18 [pid 6128] <... write resumed>) = 4 [pid 6127] <... exit_group resumed>) = ? [pid 6126] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6130] <... write resumed>) = 4 [pid 6129] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6128] close(3 [pid 6126] <... sendmsg resumed>) = 28 [pid 6130] close(3 [pid 6128] <... close resumed>) = 0 executing program executing program [pid 6130] <... close resumed>) = 0 [pid 6128] write(1, "executing program\n", 18 [pid 6126] exit_group(0 [pid 6130] write(1, "executing program\n", 18 [pid 6128] <... write resumed>) = 18 [pid 6130] <... write resumed>) = 18 [pid 6128] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6126] <... exit_group resumed>) = ? [pid 6129] <... bpf resumed>) = 3 [pid 6130] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6127] +++ exited with 0 +++ [pid 6130] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6129] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6126] +++ exited with 0 +++ [pid 6130] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6128] <... bpf resumed>) = 3 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6126, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6127, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6129] <... bpf resumed>) = 4 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6130] <... socket resumed>) = 5 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6130] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6129] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6130] <... openat resumed>) = 6 [pid 6129] <... socket resumed>) = 5 [pid 6128] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6130] write(6, "3", 1 [pid 6129] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 6131 attached [pid 6130] <... write resumed>) = 1 [pid 6129] <... openat resumed>) = 6 [pid 6128] <... bpf resumed>) = 4 [pid 6131] set_robust_list(0x555556b47660, 24 [pid 6130] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6129] write(6, "3", 1 [pid 6128] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6131 [pid 6129] <... write resumed>) = 1 [pid 6128] <... socket resumed>) = 5 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6131] <... set_robust_list resumed>) = 0 [pid 6130] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6129] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6128] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6132 attached [pid 6131] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6129] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6128] <... openat resumed>) = 6 [pid 6130] exit_group(0 [pid 6132] set_robust_list(0x555556b47660, 24 [pid 6129] exit_group(0 [pid 6128] write(6, "3", 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6132 [pid 6132] <... set_robust_list resumed>) = 0 [pid 6131] <... prctl resumed>) = 0 [pid 6130] <... exit_group resumed>) = ? [pid 6129] <... exit_group resumed>) = ? [pid 6128] <... write resumed>) = 1 [pid 6132] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6131] setpgid(0, 0 [pid 6132] <... prctl resumed>) = 0 [pid 6131] <... setpgid resumed>) = 0 [pid 6130] +++ exited with 0 +++ [pid 6132] setpgid(0, 0 [pid 6131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6128] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6132] <... setpgid resumed>) = 0 [pid 6128] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6130, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6131] <... openat resumed>) = 3 [pid 6129] +++ exited with 0 +++ [pid 6128] exit_group(0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6133 attached [pid 6132] <... openat resumed>) = 3 [pid 6131] write(3, "1000", 4 [pid 6128] <... exit_group resumed>) = ? [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6129, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6133] set_robust_list(0x555556b47660, 24 [pid 6132] write(3, "1000", 4 [pid 6131] <... write resumed>) = 4 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6133 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6133] <... set_robust_list resumed>) = 0 [pid 6132] <... write resumed>) = 4 [pid 6131] close(3 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6132] close(3) = 0 [pid 6131] <... close resumed>) = 0 [pid 6132] write(1, "executing program\n", 18executing program executing program ) = 18 [pid 6132] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6133] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6131] write(1, "executing program\n", 18 [pid 6128] +++ exited with 0 +++ [pid 6131] <... write resumed>) = 18 [pid 6133] <... prctl resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6128, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6133] setpgid(0, 0 [pid 6131] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6134 attached [pid 6131] <... bpf resumed>) = 3 [pid 6134] set_robust_list(0x555556b47660, 24) = 0 [pid 6134] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6133] <... setpgid resumed>) = 0 [pid 6131] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6134 [pid 5852] <... restart_syscall resumed>) = 0 [pid 6134] <... prctl resumed>) = 0 [pid 6134] setpgid(0, 0 [pid 6133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6134] <... setpgid resumed>) = 0 [pid 6134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6133] <... openat resumed>) = 3 [pid 6131] <... bpf resumed>) = 4 [pid 6134] <... openat resumed>) = 3 [pid 6133] write(3, "1000", 4 [pid 6131] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6133] <... write resumed>) = 4 [pid 6131] <... socket resumed>) = 5 [pid 6134] write(3, "1000", 4) = 4 ./strace-static-x86_64: Process 6135 attached [pid 6134] close(3 [pid 6133] close(3 [pid 6131] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6133] <... close resumed>) = 0 [pid 6135] set_robust_list(0x555556b47660, 24 [pid 6134] <... close resumed>) = 0 [pid 6133] write(1, "executing program\n", 18executing program [pid 6131] <... openat resumed>) = 6 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6135 [pid 6135] <... set_robust_list resumed>) = 0 executing program [pid 6134] write(1, "executing program\n", 18 [pid 6133] <... write resumed>) = 18 [pid 6132] <... bpf resumed>) = 3 [pid 6135] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6134] <... write resumed>) = 18 [pid 6131] write(6, "3", 1 [pid 6135] <... prctl resumed>) = 0 [pid 6133] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6132] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6135] setpgid(0, 0 [pid 6134] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6131] <... write resumed>) = 1 [pid 6135] <... setpgid resumed>) = 0 [pid 6135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6135] write(3, "1000", 4 [pid 6134] <... bpf resumed>) = 3 [pid 6133] <... bpf resumed>) = 3 [pid 6132] <... bpf resumed>) = 4 [pid 6131] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6135] <... write resumed>) = 4 [pid 6133] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6135] close(3 [pid 6134] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6133] <... bpf resumed>) = 4 [pid 6132] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6131] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6135] <... close resumed>) = 0 [pid 6133] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6135] write(1, "executing program\n", 18 executing program [pid 6133] <... socket resumed>) = 5 [pid 6131] exit_group(0 [pid 6135] <... write resumed>) = 18 [pid 6133] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6135] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6134] <... bpf resumed>) = 4 [pid 6133] <... openat resumed>) = 6 [pid 6132] <... socket resumed>) = 5 [pid 6131] <... exit_group resumed>) = ? [pid 6134] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6133] write(6, "3", 1 [pid 6132] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6131] +++ exited with 0 +++ [pid 6134] <... socket resumed>) = 5 [pid 6133] <... write resumed>) = 1 [pid 6132] <... openat resumed>) = 6 [pid 6134] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6133] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6132] write(6, "3", 1 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6131, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6135] <... bpf resumed>) = 3 [pid 6134] <... openat resumed>) = 6 [pid 6133] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6132] <... write resumed>) = 1 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6135] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6134] write(6, "3", 1 [pid 6133] exit_group(0 [pid 6132] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6135] <... bpf resumed>) = 4 [pid 6134] <... write resumed>) = 1 [pid 6133] <... exit_group resumed>) = ? [pid 6132] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] <... restart_syscall resumed>) = 0 [pid 6135] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6134] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6133] +++ exited with 0 +++ [pid 6132] exit_group(0 [pid 6134] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6132] <... exit_group resumed>) = ? [pid 6135] <... socket resumed>) = 5 [pid 6134] exit_group(0 [pid 6135] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6133, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 6136 attached [pid 6135] <... openat resumed>) = 6 [pid 6134] <... exit_group resumed>) = ? [pid 6135] write(6, "3", 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6136 [pid 6136] set_robust_list(0x555556b47660, 24 [pid 6135] <... write resumed>) = 1 [pid 6132] +++ exited with 0 +++ [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6136] <... set_robust_list resumed>) = 0 [pid 6135] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6136] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6132, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6136] <... prctl resumed>) = 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6136] setpgid(0, 0) = 0 [pid 6135] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6134] +++ exited with 0 +++ [pid 6136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6135] exit_group(0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6134, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6136] <... openat resumed>) = 3 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6136] write(3, "1000", 4) = 4 [pid 6136] close(3) = 0 [pid 6135] <... exit_group resumed>) = ? [pid 5848] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6136] write(1, "executing program\n", 18executing program ) = 18 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6137 attached [pid 6136] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6135] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6135, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6137] set_robust_list(0x555556b47660, 24) = 0 ./strace-static-x86_64: Process 6138 attached [pid 6137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6136] <... bpf resumed>) = 3 [pid 6137] setpgid(0, 0./strace-static-x86_64: Process 6139 attached ) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6137 [pid 6137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6138] set_robust_list(0x555556b47660, 24 [pid 6139] set_robust_list(0x555556b47660, 24 [pid 6138] <... set_robust_list resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6139 [pid 6136] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6138 [pid 6138] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6139] <... set_robust_list resumed>) = 0 [pid 6138] <... prctl resumed>) = 0 [pid 6137] <... openat resumed>) = 3 [pid 6136] <... bpf resumed>) = 4 [pid 6139] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6138] setpgid(0, 0 [pid 6139] <... prctl resumed>) = 0 [pid 6138] <... setpgid resumed>) = 0 [pid 6136] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6139] setpgid(0, 0 [pid 6138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6137] write(3, "1000", 4 [pid 6136] <... socket resumed>) = 5 [pid 6139] <... setpgid resumed>) = 0 [pid 6138] <... openat resumed>) = 3 [pid 6137] <... write resumed>) = 4 [pid 6136] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6138] write(3, "1000", 4 [pid 6136] <... openat resumed>) = 6 [pid 5852] <... restart_syscall resumed>) = 0 [pid 6137] close(3 [pid 6139] <... openat resumed>) = 3 [pid 6138] <... write resumed>) = 4 [pid 6136] write(6, "3", 1 [pid 6139] write(3, "1000", 4 [pid 6138] close(3 [pid 6136] <... write resumed>) = 1 [pid 6139] <... write resumed>) = 4 [pid 6138] <... close resumed>) = 0 [pid 6136] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6139] close(3 [pid 6138] write(1, "executing program\n", 18executing program [pid 6136] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6139] <... close resumed>) = 0 [pid 6138] <... write resumed>) = 18 executing program [pid 6139] write(1, "executing program\n", 18 [pid 6138] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6136] exit_group(0 [pid 6139] <... write resumed>) = 18 [pid 6137] <... close resumed>) = 0 [pid 6139] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6138] <... bpf resumed>) = 3 [pid 6137] write(1, "executing program\n", 18 [pid 6136] <... exit_group resumed>) = ? [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program ./strace-static-x86_64: Process 6140 attached [pid 6139] <... bpf resumed>) = 3 [pid 6137] <... write resumed>) = 18 [pid 6140] set_robust_list(0x555556b47660, 24 [pid 6138] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6139] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6140] <... set_robust_list resumed>) = 0 [pid 6137] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6140 [pid 6140] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6139] <... bpf resumed>) = 4 [pid 6138] <... bpf resumed>) = 4 [pid 6140] <... prctl resumed>) = 0 [pid 6139] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6136] +++ exited with 0 +++ [pid 6138] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6140] setpgid(0, 0 [pid 6139] <... socket resumed>) = 5 [pid 6140] <... setpgid resumed>) = 0 [pid 6138] <... socket resumed>) = 5 [pid 6137] <... bpf resumed>) = 3 [pid 6139] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6138] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6139] <... openat resumed>) = 6 [pid 6140] write(3, "1000", 4 [pid 6138] <... openat resumed>) = 6 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6136, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6137] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6140] <... write resumed>) = 4 [pid 6139] write(6, "3", 1 [pid 6138] write(6, "3", 1 [pid 6137] <... bpf resumed>) = 4 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6140] close(3 [pid 6139] <... write resumed>) = 1 [pid 6138] <... write resumed>) = 1 [pid 6137] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] <... restart_syscall resumed>) = 0 [pid 6139] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6138] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6137] <... socket resumed>) = 5 [pid 6140] <... close resumed>) = 0 [pid 6139] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6138] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6137] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6140] write(1, "executing program\n", 18executing program [pid 6139] exit_group(0 [pid 6138] exit_group(0 [pid 6137] <... openat resumed>) = 6 [pid 6140] <... write resumed>) = 18 [pid 6139] <... exit_group resumed>) = ? [pid 6140] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6138] <... exit_group resumed>) = ? [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6140] <... bpf resumed>) = 3 [pid 6137] write(6, "3", 1 [pid 6138] +++ exited with 0 +++ ./strace-static-x86_64: Process 6141 attached [pid 6140] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6137] <... write resumed>) = 1 [pid 6141] set_robust_list(0x555556b47660, 24 [pid 6137] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6138, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6139] +++ exited with 0 +++ [pid 6137] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6137] exit_group(0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6141] <... set_robust_list resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6139, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6141] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6140] <... bpf resumed>) = 4 [pid 6137] <... exit_group resumed>) = ? [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6141 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6141] <... prctl resumed>) = 0 [pid 6140] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6141] setpgid(0, 0) = 0 [pid 6140] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6137] +++ exited with 0 +++ [pid 6141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6140] <... openat resumed>) = 6 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6137, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6141] <... openat resumed>) = 3 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6141] write(3, "1000", 4 [pid 6140] write(6, "3", 1./strace-static-x86_64: Process 6143 attached ./strace-static-x86_64: Process 6142 attached [pid 6142] set_robust_list(0x555556b47660, 24) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6143 [pid 6142] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6141] <... write resumed>) = 4 [pid 6142] <... prctl resumed>) = 0 [pid 6140] <... write resumed>) = 1 [pid 6143] set_robust_list(0x555556b47660, 24 [pid 6142] setpgid(0, 0 [pid 6141] close(3 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6142 [pid 6143] <... set_robust_list resumed>) = 0 [pid 6142] <... setpgid resumed>) = 0 [pid 6141] <... close resumed>) = 0 [pid 6140] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program [pid 6143] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6141] write(1, "executing program\n", 18 [pid 6140] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6143] <... prctl resumed>) = 0 [pid 6142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6141] <... write resumed>) = 18 [pid 6143] setpgid(0, 0 [pid 6140] exit_group(0./strace-static-x86_64: Process 6144 attached [pid 6143] <... setpgid resumed>) = 0 [pid 6141] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6140] <... exit_group resumed>) = ? [pid 6144] set_robust_list(0x555556b47660, 24 [pid 6143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6142] <... openat resumed>) = 3 [pid 6142] write(3, "1000", 4) = 4 [pid 6142] close(3) = 0 [pid 6142] write(1, "executing program\n", 18executing program ) = 18 [pid 6142] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6141] <... bpf resumed>) = 3 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6144 [pid 6142] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6144] <... set_robust_list resumed>) = 0 [pid 6143] <... openat resumed>) = 3 [pid 6142] <... bpf resumed>) = 4 [pid 6144] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6143] write(3, "1000", 4 [pid 6141] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6143] <... write resumed>) = 4 [pid 6144] <... prctl resumed>) = 0 [pid 6142] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6144] setpgid(0, 0 [pid 6143] close(3 [pid 6144] <... setpgid resumed>) = 0 [pid 6142] <... socket resumed>) = 5 [pid 6143] <... close resumed>) = 0 [pid 6144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6142] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6144] <... openat resumed>) = 3 [pid 6143] write(1, "executing program\n", 18 [pid 6142] <... openat resumed>) = 6 executing program [pid 6142] write(6, "3", 1 [pid 6144] write(3, "1000", 4 [pid 6143] <... write resumed>) = 18 [pid 6141] <... bpf resumed>) = 4 [pid 6140] +++ exited with 0 +++ [pid 6144] <... write resumed>) = 4 [pid 6142] <... write resumed>) = 1 [pid 6142] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6144] close(3 [pid 6143] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6142] exit_group(0 [pid 6141] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6140, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6144] <... close resumed>) = 0 [pid 6142] <... exit_group resumed>) = ? executing program [pid 6141] <... socket resumed>) = 5 [pid 6144] write(1, "executing program\n", 18) = 18 [pid 6141] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6144] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6141] <... openat resumed>) = 6 [pid 6144] <... bpf resumed>) = 3 [pid 6143] <... bpf resumed>) = 3 [pid 6142] +++ exited with 0 +++ [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6144] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6141] write(6, "3", 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6142, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6141] <... write resumed>) = 1 [pid 6141] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6143] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6144] <... bpf resumed>) = 4 [pid 6143] <... bpf resumed>) = 4 [pid 6144] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6143] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6145 attached [pid 6144] <... socket resumed>) = 5 [pid 6141] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) ./strace-static-x86_64: Process 6146 attached [ 97.002398][ T6141] FAULT_INJECTION: forcing a failure. [ 97.002398][ T6141] name failslab, interval 1, probability 0, space 0, times 0 [ 97.017372][ T6141] CPU: 1 UID: 0 PID: 6141 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 97.017403][ T6141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 97.017417][ T6141] Call Trace: [ 97.017424][ T6141] [ 97.017433][ T6141] dump_stack_lvl+0x189/0x250 [ 97.017460][ T6141] ? __pfx____ratelimit+0x10/0x10 [ 97.017490][ T6141] ? __pfx_dump_stack_lvl+0x10/0x10 [ 97.017511][ T6141] ? __pfx__printk+0x10/0x10 [ 97.017537][ T6141] ? fs_reclaim_acquire+0x7d/0x100 [ 97.017558][ T6141] ? rcu_is_watching+0x15/0xb0 [ 97.017591][ T6141] ? __pfx___might_resched+0x10/0x10 [ 97.017633][ T6141] ? lock_acquire+0x5f/0x360 [ 97.017664][ T6141] should_fail_ex+0x414/0x560 [ 97.017699][ T6141] should_failslab+0xa8/0x100 [ 97.017718][ T6141] kmem_cache_alloc_node_noprof+0x76/0x3c0 [ 97.017749][ T6141] ? __alloc_skb+0x112/0x2d0 [ 97.017784][ T6141] __alloc_skb+0x112/0x2d0 [ 97.017817][ T6141] netlink_sendmsg+0x5c6/0xb30 [ 97.017853][ T6141] ? __pfx_netlink_sendmsg+0x10/0x10 [ 97.017886][ T6141] ? aa_sock_msg_perm+0x94/0x160 [ 97.017914][ T6141] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 97.017938][ T6141] ? __pfx_netlink_sendmsg+0x10/0x10 [ 97.017970][ T6141] __sock_sendmsg+0x219/0x270 [ 97.017999][ T6141] ____sys_sendmsg+0x505/0x830 [ 97.018023][ T6141] ? __pfx_____sys_sendmsg+0x10/0x10 [ 97.018048][ T6141] ? import_iovec+0x74/0xa0 [ 97.018078][ T6141] ___sys_sendmsg+0x21f/0x2a0 [ 97.018101][ T6141] ? __pfx____sys_sendmsg+0x10/0x10 [ 97.018126][ T6141] ? do_raw_spin_lock+0x121/0x290 [ 97.018175][ T6141] __x64_sys_sendmsg+0x19b/0x260 [ 97.018195][ T6141] ? _raw_spin_unlock_irq+0x2e/0x50 [ 97.018222][ T6141] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 97.018248][ T6141] ? rcu_is_watching+0x15/0xb0 [ 97.018286][ T6141] do_syscall_64+0xfa/0x3b0 [ 97.018317][ T6141] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 97.018337][ T6141] ? clear_bhb_loop+0x60/0xb0 [ 97.018359][ T6141] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 97.018380][ T6141] RIP: 0033:0x7f7d4bd78999 [ 97.018397][ T6141] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 97.018414][ T6141] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [pid 6145] set_robust_list(0x555556b47660, 24 [pid 6144] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6143] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6146] set_robust_list(0x555556b47660, 24 [pid 6145] <... set_robust_list resumed>) = 0 [pid 6144] <... openat resumed>) = 6 [pid 6143] <... openat resumed>) = 6 [pid 6141] exit_group(0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6145 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6146 [pid 6146] <... set_robust_list resumed>) = 0 [pid 6143] write(6, "3", 1 [pid 6146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6143] <... write resumed>) = 1 [pid 6146] setpgid(0, 0 [pid 6143] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6146] <... setpgid resumed>) = 0 [pid 6144] write(6, "3", 1 [pid 6143] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6141] <... exit_group resumed>) = ? [pid 6146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6145] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6144] <... write resumed>) = 1 [pid 6143] exit_group(0 [pid 6146] <... openat resumed>) = 3 [pid 6143] <... exit_group resumed>) = ? [pid 6146] write(3, "1000", 4 [pid 6145] <... prctl resumed>) = 0 [pid 6144] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6141] +++ exited with 0 +++ [pid 6145] setpgid(0, 0 [pid 6144] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6145] <... setpgid resumed>) = 0 [pid 6144] exit_group(0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6141, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 6145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6144] <... exit_group resumed>) = ? executing program [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6146] <... write resumed>) = 4 [pid 6145] <... openat resumed>) = 3 [pid 6143] +++ exited with 0 +++ [pid 6146] close(3 [pid 6145] write(3, "1000", 4 [pid 6146] <... close resumed>) = 0 [pid 6146] write(1, "executing program\n", 18 [pid 6145] <... write resumed>) = 4 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6143, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6146] <... write resumed>) = 18 [pid 6145] close(3 [pid 6146] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6145] <... close resumed>) = 0 [pid 6144] +++ exited with 0 +++ [pid 5849] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6145] write(1, "executing program\n", 18executing program [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6144, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6145] <... write resumed>) = 18 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6145] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6146] <... bpf resumed>) = 3 [pid 6146] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 6148 attached ./strace-static-x86_64: Process 6147 attached [pid 6145] <... bpf resumed>) = 3 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6148] set_robust_list(0x555556b47660, 24) = 0 [pid 6147] set_robust_list(0x555556b47660, 24 [pid 6145] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6147 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6148 [pid 6148] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6147] <... set_robust_list resumed>) = 0 [pid 6145] <... bpf resumed>) = 4 [pid 6146] <... bpf resumed>) = 4 [pid 6148] <... prctl resumed>) = 0 [pid 6147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6146] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6148] setpgid(0, 0 [pid 6147] setpgid(0, 0 [pid 6145] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [ 97.018437][ T6141] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [ 97.018452][ T6141] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [ 97.018465][ T6141] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [ 97.018478][ T6141] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 97.018490][ T6141] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 97.018511][ T6141] [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6146] <... socket resumed>) = 5 [pid 6148] <... setpgid resumed>) = 0 [pid 6147] <... setpgid resumed>) = 0 [pid 6146] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6145] <... socket resumed>) = 5 ./strace-static-x86_64: Process 6149 attached [pid 6148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6146] <... openat resumed>) = 6 [pid 6145] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6149] set_robust_list(0x555556b47660, 24 [pid 6148] <... openat resumed>) = 3 [pid 6147] <... openat resumed>) = 3 [pid 6146] write(6, "3", 1 [pid 6149] <... set_robust_list resumed>) = 0 [pid 6148] write(3, "1000", 4 [pid 6147] write(3, "1000", 4 [pid 6145] <... openat resumed>) = 6 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6149 [pid 6149] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6148] <... write resumed>) = 4 [pid 6147] <... write resumed>) = 4 [pid 6146] <... write resumed>) = 1 [pid 6147] close(3 [pid 6146] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6149] <... prctl resumed>) = 0 [pid 6148] close(3 [pid 6145] write(6, "3", 1 [pid 6147] <... close resumed>) = 0 [pid 6146] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6147] write(1, "executing program\n", 18executing program [pid 6149] setpgid(0, 0 [pid 6148] <... close resumed>) = 0 [pid 6147] <... write resumed>) = 18 [pid 6146] exit_group(0 [pid 6145] <... write resumed>) = 1 [pid 6149] <... setpgid resumed>) = 0 [pid 6148] write(1, "executing program\n", 18 executing program [pid 6147] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6146] <... exit_group resumed>) = ? [pid 6149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6148] <... write resumed>) = 18 [pid 6147] <... bpf resumed>) = 3 [pid 6145] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6148] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6145] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6149] <... openat resumed>) = 3 [pid 6147] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6149] write(3, "1000", 4 [pid 6147] <... bpf resumed>) = 4 [pid 6149] <... write resumed>) = 4 [pid 6147] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6145] exit_group(0 [pid 6149] close(3 [pid 6147] <... socket resumed>) = 5 [pid 6146] +++ exited with 0 +++ [pid 6149] <... close resumed>) = 0 [pid 6145] <... exit_group resumed>) = ? [pid 6149] write(1, "executing program\n", 18 [pid 6147] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6146, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6147] <... openat resumed>) = 6 [pid 5848] restart_syscall(<... resuming interrupted clone ...>executing program ) = 0 [pid 6149] <... write resumed>) = 18 [pid 6147] write(6, "3", 1 [pid 6149] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6148] <... bpf resumed>) = 3 [pid 6147] <... write resumed>) = 1 [pid 6145] +++ exited with 0 +++ [pid 6149] <... bpf resumed>) = 3 [pid 6149] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6148] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6147] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6145, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6149] <... bpf resumed>) = 4 [pid 6148] <... bpf resumed>) = 4 [pid 6147] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6149] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6149] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6148] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6147] exit_group(0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6148] <... socket resumed>) = 5 [pid 6147] <... exit_group resumed>) = ? [pid 6149] <... openat resumed>) = 6 [pid 6149] write(6, "3", 1./strace-static-x86_64: Process 6150 attached ) = 1 [pid 6148] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6149] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6149] exit_group(0) = ? [pid 6148] <... openat resumed>) = 6 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6150 [pid 6150] set_robust_list(0x555556b47660, 24 [pid 6148] write(6, "3", 1 [pid 6147] +++ exited with 0 +++ ./strace-static-x86_64: Process 6151 attached [pid 6150] <... set_robust_list resumed>) = 0 [pid 6148] <... write resumed>) = 1 [pid 6151] set_robust_list(0x555556b47660, 24 [pid 6150] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6148] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6147, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6151] <... set_robust_list resumed>) = 0 [pid 6150] <... prctl resumed>) = 0 [pid 6148] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6151 [pid 6151] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6150] setpgid(0, 0 [pid 6148] exit_group(0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6151] <... prctl resumed>) = 0 [pid 6150] <... setpgid resumed>) = 0 [pid 6148] <... exit_group resumed>) = ? [pid 6151] setpgid(0, 0 [pid 6149] +++ exited with 0 +++ [pid 6151] <... setpgid resumed>) = 0 [pid 6150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6149, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6150] <... openat resumed>) = 3 [pid 6148] +++ exited with 0 +++ [pid 6150] write(3, "1000", 4 [pid 6151] <... openat resumed>) = 3 [pid 6150] <... write resumed>) = 4 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6148, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6151] write(3, "1000", 4 [pid 6150] close(3./strace-static-x86_64: Process 6152 attached [pid 6151] <... write resumed>) = 4 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6152] set_robust_list(0x555556b47660, 24 [pid 6151] close(3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6152 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6151] <... close resumed>) = 0 [pid 6152] <... set_robust_list resumed>) = 0 [pid 6152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6152] setpgid(0, 0 [pid 6150] <... close resumed>) = 0 [pid 6152] <... setpgid resumed>) = 0 [pid 6152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6151] write(1, "executing program\n", 18executing program executing program [pid 6150] write(1, "executing program\n", 18 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6152] write(3, "1000", 4 [pid 6151] <... write resumed>) = 18 [pid 6150] <... write resumed>) = 18 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6152] <... write resumed>) = 4 [pid 6152] close(3) = 0 [pid 6150] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6152] write(1, "executing program\n", 18executing program ) = 18 [pid 6152] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6153 attached ) = 3 [pid 6151] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6154 attached [pid 6154] set_robust_list(0x555556b47660, 24 [pid 6153] set_robust_list(0x555556b47660, 24 [pid 6152] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6151] <... bpf resumed>) = 3 [pid 6150] <... bpf resumed>) = 3 [pid 6154] <... set_robust_list resumed>) = 0 [pid 6152] <... bpf resumed>) = 4 [pid 6152] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6152] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6153] <... set_robust_list resumed>) = 0 [pid 6152] <... openat resumed>) = 6 [pid 6152] write(6, "3", 1 [pid 6154] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6152] <... write resumed>) = 1 [pid 6153] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6151] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6153] <... prctl resumed>) = 0 [pid 6154] <... prctl resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6153 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6154 [pid 6152] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6154] setpgid(0, 0) = 0 [pid 6152] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6153] setpgid(0, 0) = 0 [pid 6152] exit_group(0) = ? [pid 6154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6151] <... bpf resumed>) = 4 [pid 6150] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6152] +++ exited with 0 +++ [pid 6154] write(3, "1000", 4) = 4 [pid 6154] close(3) = 0 [pid 6154] write(1, "executing program\n", 18executing program ) = 18 [pid 6153] <... openat resumed>) = 3 [pid 6150] <... bpf resumed>) = 4 [pid 6154] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6153] write(3, "1000", 4 [pid 6151] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6150] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6152, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6154] <... bpf resumed>) = 3 [pid 6153] <... write resumed>) = 4 [pid 6151] <... socket resumed>) = 5 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6153] close(3 [pid 6151] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6150] <... socket resumed>) = 5 [pid 6153] <... close resumed>) = 0 executing program [pid 6151] <... openat resumed>) = 6 [pid 6150] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6153] write(1, "executing program\n", 18 [pid 6151] write(6, "3", 1 [pid 6153] <... write resumed>) = 18 [pid 6151] <... write resumed>) = 1 [pid 6150] <... openat resumed>) = 6 [pid 6153] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6151] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6150] write(6, "3", 1 [pid 6154] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6151] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6154] <... bpf resumed>) = 4 [pid 6151] exit_group(0 [pid 6150] <... write resumed>) = 1 [pid 6151] <... exit_group resumed>) = ? [pid 5849] <... restart_syscall resumed>) = 0 [pid 6154] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6150] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6154] <... socket resumed>) = 5 [pid 6154] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6154] write(6, "3", 1 [pid 6150] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6154] <... write resumed>) = 1 [pid 6154] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6150] exit_group(0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6154] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6154] exit_group(0) = ? ./strace-static-x86_64: Process 6155 attached [pid 6153] <... bpf resumed>) = 3 [pid 6151] +++ exited with 0 +++ [pid 6150] <... exit_group resumed>) = ? [pid 6155] set_robust_list(0x555556b47660, 24 [pid 6154] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6151, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6155] <... set_robust_list resumed>) = 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6155] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6154, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6153] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6155 [pid 5845] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6155] <... prctl resumed>) = 0 [pid 6155] setpgid(0, 0) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6156 attached ) = 3 [pid 6156] set_robust_list(0x555556b47660, 24 [pid 6155] write(3, "1000", 4 [pid 6153] <... bpf resumed>) = 4 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6156 [pid 6156] <... set_robust_list resumed>) = 0 [pid 6155] <... write resumed>) = 4 [pid 6153] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6150] +++ exited with 0 +++ [pid 5848] <... restart_syscall resumed>) = 0 [pid 6156] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6150, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6155] close(3 [pid 6153] <... socket resumed>) = 5 [pid 6155] <... close resumed>) = 0 [pid 6156] <... prctl resumed>) = 0 [pid 6155] write(1, "executing program\n", 18executing program [pid 6153] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6155] <... write resumed>) = 18 [pid 6153] <... openat resumed>) = 6 [pid 6156] setpgid(0, 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6156] <... setpgid resumed>) = 0 [pid 6155] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6157 attached [pid 6156] <... openat resumed>) = 3 [pid 6155] <... bpf resumed>) = 3 [pid 6156] write(3, "1000", 4 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6158 ./strace-static-x86_64: Process 6158 attached [pid 6157] set_robust_list(0x555556b47660, 24 [pid 6156] <... write resumed>) = 4 [pid 6155] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6153] write(6, "3", 1 [pid 6158] set_robust_list(0x555556b47660, 24 [pid 6157] <... set_robust_list resumed>) = 0 [pid 6156] close(3 [pid 6153] <... write resumed>) = 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6157 [pid 6158] <... set_robust_list resumed>) = 0 [pid 6157] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6156] <... close resumed>) = 0 [pid 6155] <... bpf resumed>) = 4 [pid 6153] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6158] prctl(PR_SET_PDEATHSIG, SIGKILLexecuting program [pid 6157] <... prctl resumed>) = 0 [pid 6156] write(1, "executing program\n", 18 [pid 6155] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6153] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6156] <... write resumed>) = 18 [pid 6155] <... socket resumed>) = 5 [pid 6156] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6155] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6153] exit_group(0 [pid 6157] setpgid(0, 0 [pid 6158] <... prctl resumed>) = 0 [pid 6158] setpgid(0, 0 [pid 6157] <... setpgid resumed>) = 0 [pid 6153] <... exit_group resumed>) = ? [pid 6158] <... setpgid resumed>) = 0 [pid 6157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6156] <... bpf resumed>) = 3 [pid 6155] <... openat resumed>) = 6 [pid 6158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6157] <... openat resumed>) = 3 [pid 6153] +++ exited with 0 +++ [pid 6157] write(3, "1000", 4 [pid 6156] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6155] write(6, "3", 1 [pid 6158] <... openat resumed>) = 3 [pid 6157] <... write resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6153, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6158] write(3, "1000", 4 [pid 6157] close(3 [pid 6155] <... write resumed>) = 1 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6158] <... write resumed>) = 4 [pid 6157] <... close resumed>) = 0 [pid 6156] <... bpf resumed>) = 4 [pid 6155] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6158] close(3 [pid 6157] write(1, "executing program\n", 18 [pid 6155] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 6156] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6158] <... close resumed>) = 0 [pid 6157] <... write resumed>) = 18 [pid 6155] exit_group(0) = ? [pid 6158] write(1, "executing program\n", 18 [pid 6157] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6156] <... socket resumed>) = 5 executing program [pid 6158] <... write resumed>) = 18 [pid 6157] <... bpf resumed>) = 3 [pid 6156] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] <... restart_syscall resumed>) = 0 [pid 6158] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6157] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6155] +++ exited with 0 +++ [pid 6157] <... bpf resumed>) = 4 [pid 6156] <... openat resumed>) = 6 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6155, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6157] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6156] write(6, "3", 1 [pid 6157] <... socket resumed>) = 5 [pid 6156] <... write resumed>) = 1 [pid 6157] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6156] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 6159 attached [pid 6157] <... openat resumed>) = 6 [pid 6156] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6159] set_robust_list(0x555556b47660, 24) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6159 [pid 6159] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6157] write(6, "3", 1 [pid 6156] exit_group(0 [pid 6157] <... write resumed>) = 1 [pid 6156] <... exit_group resumed>) = ? [pid 6159] <... prctl resumed>) = 0 [pid 6158] <... bpf resumed>) = 3 [pid 6157] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6159] setpgid(0, 0 [pid 6158] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6157] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6159] <... setpgid resumed>) = 0 [pid 6159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6158] <... bpf resumed>) = 4 [pid 6159] <... openat resumed>) = 3 [pid 6158] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6157] exit_group(0) = ? [pid 6159] write(3, "1000", 4 [pid 6158] <... socket resumed>) = 5 [pid 6156] +++ exited with 0 +++ [pid 6159] <... write resumed>) = 4 [pid 6158] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6157] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6156, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6159] close(3 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6157, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6159] <... close resumed>) = 0 [pid 6158] <... openat resumed>) = 6 executing program [pid 6159] write(1, "executing program\n", 18 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6158] write(6, "3", 1 [pid 6159] <... write resumed>) = 18 [pid 6158] <... write resumed>) = 1 [pid 6159] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6158] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6158] exit_group(0) = ? ./strace-static-x86_64: Process 6161 attached ./strace-static-x86_64: Process 6160 attached [pid 6159] <... bpf resumed>) = 3 [pid 6158] +++ exited with 0 +++ [pid 5848] <... restart_syscall resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6160 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6161 [pid 6161] set_robust_list(0x555556b47660, 24 [pid 6160] set_robust_list(0x555556b47660, 24 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6158, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 6161] <... set_robust_list resumed>) = 0 [pid 6161] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6160] <... set_robust_list resumed>) = 0 [pid 6159] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6162 attached [pid 6161] <... prctl resumed>) = 0 [pid 6160] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6161] setpgid(0, 0 [pid 6160] <... prctl resumed>) = 0 [pid 6159] <... bpf resumed>) = 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6162 [pid 6162] set_robust_list(0x555556b47660, 24 [pid 6160] setpgid(0, 0 [pid 6161] <... setpgid resumed>) = 0 [pid 5852] <... restart_syscall resumed>) = 0 [pid 6162] <... set_robust_list resumed>) = 0 [pid 6162] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6160] <... setpgid resumed>) = 0 [pid 6159] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6163 attached [pid 6162] <... prctl resumed>) = 0 [pid 6161] <... openat resumed>) = 3 [pid 6160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6159] <... socket resumed>) = 5 [pid 6163] set_robust_list(0x555556b47660, 24 [pid 6162] setpgid(0, 0 [pid 6161] write(3, "1000", 4 [pid 6160] <... openat resumed>) = 3 [pid 6160] write(3, "1000", 4 [pid 6159] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6163] <... set_robust_list resumed>) = 0 [pid 6162] <... setpgid resumed>) = 0 [pid 6161] <... write resumed>) = 4 [pid 6160] <... write resumed>) = 4 [pid 6159] <... openat resumed>) = 6 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6163 [pid 6163] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6160] close(3 [pid 6159] write(6, "3", 1 [pid 6162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6161] close(3 [pid 6160] <... close resumed>) = 0 [pid 6159] <... write resumed>) = 1 [pid 6163] <... prctl resumed>) = 0 [pid 6160] write(1, "executing program\n", 18executing program ) = 18 [pid 6159] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6163] setpgid(0, 0 [pid 6162] <... openat resumed>) = 3 [pid 6161] <... close resumed>) = 0 [pid 6160] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6159] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6163] <... setpgid resumed>) = 0 [pid 6162] write(3, "1000", 4 [pid 6161] write(1, "executing program\n", 18 [pid 6160] <... bpf resumed>) = 3 executing program [pid 6159] exit_group(0 [pid 6163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6162] <... write resumed>) = 4 [pid 6161] <... write resumed>) = 18 [pid 6163] <... openat resumed>) = 3 [pid 6160] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6159] <... exit_group resumed>) = ? [pid 6163] write(3, "1000", 4 [pid 6162] close(3 [pid 6161] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6160] <... bpf resumed>) = 4 [pid 6159] +++ exited with 0 +++ [pid 6163] <... write resumed>) = 4 [pid 6162] <... close resumed>) = 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6159, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6160] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6163] close(3 [pid 6162] write(1, "executing program\n", 18 executing program [pid 6161] <... bpf resumed>) = 3 [pid 6163] <... close resumed>) = 0 [pid 6162] <... write resumed>) = 18 [pid 6160] <... socket resumed>) = 5 [pid 6163] write(1, "executing program\n", 18 [pid 6161] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24executing program [pid 6162] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6163] <... write resumed>) = 18 [pid 6160] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6161] <... bpf resumed>) = 4 [pid 6163] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6162] <... bpf resumed>) = 3 [pid 6161] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6160] <... openat resumed>) = 6 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6163] <... bpf resumed>) = 3 [pid 6162] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6161] <... socket resumed>) = 5 [pid 6160] write(6, "3", 1./strace-static-x86_64: Process 6164 attached [pid 6164] set_robust_list(0x555556b47660, 24 [pid 6162] <... bpf resumed>) = 4 [pid 6161] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6160] <... write resumed>) = 1 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6164 [pid 6164] <... set_robust_list resumed>) = 0 [pid 6163] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6162] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6161] <... openat resumed>) = 6 [pid 6160] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6164] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6163] <... bpf resumed>) = 4 [pid 6162] <... socket resumed>) = 5 [pid 6161] write(6, "3", 1 [pid 6164] <... prctl resumed>) = 0 [pid 6163] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6162] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6160] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6164] setpgid(0, 0 [pid 6163] <... socket resumed>) = 5 [pid 6162] <... openat resumed>) = 6 [pid 6161] <... write resumed>) = 1 [pid 6160] exit_group(0 [pid 6164] <... setpgid resumed>) = 0 [pid 6163] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6162] write(6, "3", 1 [pid 6161] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6162] <... write resumed>) = 1 [pid 6160] <... exit_group resumed>) = ? [pid 6164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6161] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6161] exit_group(0 [pid 6163] <... openat resumed>) = 6 [pid 6164] <... openat resumed>) = 3 [pid 6162] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6164] write(3, "1000", 4 [pid 6163] write(6, "3", 1 [pid 6162] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6161] <... exit_group resumed>) = ? [pid 6164] <... write resumed>) = 4 [pid 6163] <... write resumed>) = 1 [pid 6162] exit_group(0 [pid 6160] +++ exited with 0 +++ [pid 6164] close(3) = 0 [pid 6163] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6162] <... exit_group resumed>) = ? [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6160, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- executing program [pid 6164] write(1, "executing program\n", 18 [pid 6163] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6161] +++ exited with 0 +++ [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6164] <... write resumed>) = 18 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6161, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6163] exit_group(0 [pid 6164] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6163] <... exit_group resumed>) = ? [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6162] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6162, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6164] <... bpf resumed>) = 3 [pid 6163] +++ exited with 0 +++ [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6163, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] <... restart_syscall resumed>) = 0 [pid 6164] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6164] <... bpf resumed>) = 4 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6165 attached [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6166 attached [pid 6165] set_robust_list(0x555556b47660, 24 [pid 6164] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6165] <... set_robust_list resumed>) = 0 [pid 6166] set_robust_list(0x555556b47660, 24 [pid 6164] <... socket resumed>) = 5 ./strace-static-x86_64: Process 6167 attached [pid 6166] <... set_robust_list resumed>) = 0 [pid 6165] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6164] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6166 [pid 6167] set_robust_list(0x555556b47660, 24 [pid 6165] <... prctl resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6165 [pid 6166] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 6168 attached [pid 6167] <... set_robust_list resumed>) = 0 [pid 6166] <... prctl resumed>) = 0 [pid 6165] setpgid(0, 0 [pid 6164] <... openat resumed>) = 6 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6167 [pid 6167] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6165] <... setpgid resumed>) = 0 [pid 6164] write(6, "3", 1 [pid 6168] set_robust_list(0x555556b47660, 24 [pid 6167] <... prctl resumed>) = 0 [pid 6166] setpgid(0, 0 [pid 6165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6164] <... write resumed>) = 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6168 [pid 6168] <... set_robust_list resumed>) = 0 [pid 6167] setpgid(0, 0 [pid 6166] <... setpgid resumed>) = 0 [pid 6164] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6168] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6167] <... setpgid resumed>) = 0 [pid 6166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6165] <... openat resumed>) = 3 [pid 6167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6166] <... openat resumed>) = 3 [pid 6168] <... prctl resumed>) = 0 [pid 6167] <... openat resumed>) = 3 [pid 6165] write(3, "1000", 4 [pid 6164] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6168] setpgid(0, 0 [pid 6167] write(3, "1000", 4 [pid 6166] write(3, "1000", 4 [pid 6165] <... write resumed>) = 4 [pid 6168] <... setpgid resumed>) = 0 [pid 6167] <... write resumed>) = 4 [pid 6166] <... write resumed>) = 4 [pid 6165] close(3 [pid 6164] exit_group(0 [pid 6168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6167] close(3 [pid 6166] close(3 [pid 6165] <... close resumed>) = 0 [pid 6167] <... close resumed>) = 0 [pid 6166] <... close resumed>) = 0 [pid 6164] <... exit_group resumed>) = ? [pid 6168] <... openat resumed>) = 3 [pid 6167] write(1, "executing program\n", 18 [pid 6166] write(1, "executing program\n", 18 [pid 6165] write(1, "executing program\n", 18 [pid 6168] write(3, "1000", 4executing program executing program executing program [pid 6167] <... write resumed>) = 18 [pid 6166] <... write resumed>) = 18 [pid 6165] <... write resumed>) = 18 [pid 6168] <... write resumed>) = 4 [pid 6167] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6166] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6164] +++ exited with 0 +++ [pid 6168] close(3 [pid 6165] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6167] <... bpf resumed>) = 3 [pid 6166] <... bpf resumed>) = 3 [pid 6168] <... close resumed>) = 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6164, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6167] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6165] <... bpf resumed>) = 3 [pid 6168] write(1, "executing program\n", 18executing program ) = 18 [pid 6166] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6165] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6167] <... bpf resumed>) = 4 [pid 6168] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6166] <... bpf resumed>) = 4 [pid 6165] <... bpf resumed>) = 4 [pid 6167] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6166] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6167] <... socket resumed>) = 5 [pid 6166] <... socket resumed>) = 5 [pid 6165] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6168] <... bpf resumed>) = 3 [pid 6166] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6165] <... socket resumed>) = 5 [pid 6166] <... openat resumed>) = 6 [pid 6165] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6166] write(6, "3", 1 [pid 6165] <... openat resumed>) = 6 [pid 6167] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6166] <... write resumed>) = 1 [pid 6168] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6167] <... openat resumed>) = 6 [pid 6168] <... bpf resumed>) = 4 [pid 6167] write(6, "3", 1 [pid 6166] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6165] write(6, "3", 1./strace-static-x86_64: Process 6169 attached [pid 6168] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6167] <... write resumed>) = 1 [pid 6166] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6165] <... write resumed>) = 1 [pid 6169] set_robust_list(0x555556b47660, 24 [pid 6168] <... socket resumed>) = 5 [pid 6167] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6166] exit_group(0 [pid 6165] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6169] <... set_robust_list resumed>) = 0 [pid 6168] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6167] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6166] <... exit_group resumed>) = ? [pid 6165] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6169 [pid 6169] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6168] <... openat resumed>) = 6 [pid 6167] exit_group(0 [pid 6165] exit_group(0 [pid 6169] <... prctl resumed>) = 0 [pid 6168] write(6, "3", 1 [pid 6167] <... exit_group resumed>) = ? [pid 6166] +++ exited with 0 +++ [pid 6165] <... exit_group resumed>) = ? [pid 6169] setpgid(0, 0 [pid 6168] <... write resumed>) = 1 [pid 6167] +++ exited with 0 +++ [pid 6169] <... setpgid resumed>) = 0 [pid 6168] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6168] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6166, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6167, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6165] +++ exited with 0 +++ ./strace-static-x86_64: Process 6170 attached [pid 6169] <... openat resumed>) = 3 [pid 6168] exit_group(0 [pid 6170] set_robust_list(0x555556b47660, 24 [pid 6169] write(3, "1000", 4 [pid 6168] <... exit_group resumed>) = ? [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6165, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6170 [pid 6170] <... set_robust_list resumed>) = 0 [pid 6169] <... write resumed>) = 4 [pid 6169] close(3) = 0 [pid 6170] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6169] write(1, "executing program\n", 18executing program ) = 18 [pid 6170] <... prctl resumed>) = 0 [pid 6170] setpgid(0, 0) = 0 [pid 6168] +++ exited with 0 +++ [pid 6169] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6168, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6170] <... openat resumed>) = 3 [pid 6169] <... bpf resumed>) = 3 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6170] write(3, "1000", 4) = 4 [pid 6169] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6170] close(3) = 0 executing program [pid 6170] write(1, "executing program\n", 18 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6170] <... write resumed>) = 18 [pid 6170] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6171 attached [pid 6171] set_robust_list(0x555556b47660, 24) = 0 [pid 6171] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6169] <... bpf resumed>) = 4 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6171 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6169] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6171] <... prctl resumed>) = 0 [pid 6171] setpgid(0, 0) = 0 [pid 6171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6172 attached ) = 3 [pid 6172] set_robust_list(0x555556b47660, 24) = 0 ./strace-static-x86_64: Process 6173 attached [pid 6172] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6171] write(3, "1000", 4 [pid 6170] <... bpf resumed>) = 3 [pid 6169] <... socket resumed>) = 5 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6172 [pid 6173] set_robust_list(0x555556b47660, 24 [pid 6169] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6173] <... set_robust_list resumed>) = 0 [pid 6172] <... prctl resumed>) = 0 [pid 6171] <... write resumed>) = 4 [pid 6169] <... openat resumed>) = 6 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6173 [pid 6173] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6172] setpgid(0, 0 [pid 6171] close(3 [pid 6170] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6169] write(6, "3", 1 [pid 6173] <... prctl resumed>) = 0 [pid 6172] <... setpgid resumed>) = 0 [pid 6171] <... close resumed>) = 0 executing program [pid 6173] setpgid(0, 0 [pid 6171] write(1, "executing program\n", 18 [pid 6169] <... write resumed>) = 1 [pid 6173] <... setpgid resumed>) = 0 [pid 6173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6171] <... write resumed>) = 18 [pid 6169] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6170] <... bpf resumed>) = 4 [pid 6169] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6171] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6173] <... openat resumed>) = 3 [pid 6172] <... openat resumed>) = 3 [pid 6170] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6169] exit_group(0 [pid 6173] write(3, "1000", 4 [pid 6172] write(3, "1000", 4 [pid 6170] <... socket resumed>) = 5 [pid 6169] <... exit_group resumed>) = ? [pid 6173] <... write resumed>) = 4 [pid 6172] <... write resumed>) = 4 executing program [pid 6171] <... bpf resumed>) = 3 [pid 6170] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6173] close(3 [pid 6172] close(3 [pid 6169] +++ exited with 0 +++ [pid 6172] <... close resumed>) = 0 [pid 6172] write(1, "executing program\n", 18 [pid 6173] <... close resumed>) = 0 [pid 6172] <... write resumed>) = 18 [pid 6171] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6170] <... openat resumed>) = 6 [pid 6173] write(1, "executing program\n", 18 executing program [pid 6172] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6170] write(6, "3", 1 [pid 6173] <... write resumed>) = 18 [pid 6172] <... bpf resumed>) = 3 [pid 6171] <... bpf resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6169, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6173] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6172] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6171] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6170] <... write resumed>) = 1 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6172] <... bpf resumed>) = 4 [pid 6173] <... bpf resumed>) = 3 [pid 6172] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6171] <... socket resumed>) = 5 [pid 6170] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6173] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6172] <... socket resumed>) = 5 [pid 6171] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6170] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6173] <... bpf resumed>) = 4 [pid 6172] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6171] <... openat resumed>) = 6 [pid 6170] exit_group(0 [pid 6173] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6172] <... openat resumed>) = 6 [pid 6171] write(6, "3", 1 [pid 6170] <... exit_group resumed>) = ? [pid 6173] <... socket resumed>) = 5 [pid 6172] write(6, "3", 1 [pid 6171] <... write resumed>) = 1 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6174 attached [pid 6173] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6172] <... write resumed>) = 1 [pid 6171] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6170] +++ exited with 0 +++ [pid 6173] <... openat resumed>) = 6 [pid 6172] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6171] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6170, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6173] write(6, "3", 1 [pid 6172] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6174] set_robust_list(0x555556b47660, 24 [pid 6173] <... write resumed>) = 1 [pid 6172] exit_group(0 [pid 6171] exit_group(0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6174 [pid 6174] <... set_robust_list resumed>) = 0 [pid 6173] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6172] <... exit_group resumed>) = ? [pid 6171] <... exit_group resumed>) = ? [pid 6174] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6173] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6171] +++ exited with 0 +++ [pid 6174] <... prctl resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6171, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6174] setpgid(0, 0 [pid 6173] exit_group(0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6174] <... setpgid resumed>) = 0 [pid 6173] <... exit_group resumed>) = ? [pid 6174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6172] +++ exited with 0 +++ [pid 5852] <... restart_syscall resumed>) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6172, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6174] <... openat resumed>) = 3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6174] write(3, "1000", 4./strace-static-x86_64: Process 6175 attached ./strace-static-x86_64: Process 6176 attached ) = 4 [pid 6175] set_robust_list(0x555556b47660, 24 [pid 6174] close(3 [pid 6176] set_robust_list(0x555556b47660, 24 [pid 6175] <... set_robust_list resumed>) = 0 [pid 6174] <... close resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6176 [pid 6176] <... set_robust_list resumed>) = 0 executing program [pid 6174] write(1, "executing program\n", 18 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6175 [pid 6176] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6175] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6174] <... write resumed>) = 18 [pid 6174] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6176] <... prctl resumed>) = 0 [pid 6175] <... prctl resumed>) = 0 [pid 6173] +++ exited with 0 +++ [pid 6176] setpgid(0, 0 [pid 6175] setpgid(0, 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6173, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6176] <... setpgid resumed>) = 0 [pid 6175] <... setpgid resumed>) = 0 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5845] <... restart_syscall resumed>) = 0 [pid 6176] <... openat resumed>) = 3 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6176] write(3, "1000", 4 [pid 6175] <... openat resumed>) = 3 [pid 6174] <... bpf resumed>) = 3 ./strace-static-x86_64: Process 6177 attached [pid 6176] <... write resumed>) = 4 [pid 6175] write(3, "1000", 4 [pid 6177] set_robust_list(0x555556b47660, 24 [pid 6176] close(3 [pid 6177] <... set_robust_list resumed>) = 0 [pid 6175] <... write resumed>) = 4 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6176] <... close resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6177 ./strace-static-x86_64: Process 6178 attached [pid 6177] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6176] write(1, "executing program\n", 18 [pid 6175] close(3 [pid 6174] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24executing program [pid 6178] set_robust_list(0x555556b47660, 24 [pid 6177] <... prctl resumed>) = 0 [pid 6176] <... write resumed>) = 18 [pid 6175] <... close resumed>) = 0 [pid 6174] <... bpf resumed>) = 4 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6178 [pid 6178] <... set_robust_list resumed>) = 0 [pid 6177] setpgid(0, 0 [pid 6176] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6175] write(1, "executing program\n", 18 [pid 6174] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 executing program [pid 6177] <... setpgid resumed>) = 0 [pid 6178] setpgid(0, 0 [pid 6177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6176] <... bpf resumed>) = 3 [pid 6175] <... write resumed>) = 18 [pid 6174] <... socket resumed>) = 5 [pid 6178] <... setpgid resumed>) = 0 [pid 6178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6177] <... openat resumed>) = 3 [pid 6176] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6175] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6174] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6178] <... openat resumed>) = 3 [pid 6177] write(3, "1000", 4 [pid 6178] write(3, "1000", 4 [pid 6174] <... openat resumed>) = 6 [pid 6178] <... write resumed>) = 4 [pid 6177] <... write resumed>) = 4 [pid 6176] <... bpf resumed>) = 4 [pid 6178] close(3 [pid 6177] close(3 [pid 6175] <... bpf resumed>) = 3 [pid 6174] write(6, "3", 1 [pid 6178] <... close resumed>) = 0 [pid 6177] <... close resumed>) = 0 [pid 6176] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6175] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6174] <... write resumed>) = 1 executing program [pid 6178] write(1, "executing program\n", 18 [pid 6177] write(1, "executing program\n", 18 executing program [pid 6176] <... socket resumed>) = 5 [pid 6175] <... bpf resumed>) = 4 [pid 6174] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6178] <... write resumed>) = 18 [pid 6177] <... write resumed>) = 18 [pid 6176] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6175] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6174] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6178] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6177] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6176] <... openat resumed>) = 6 [pid 6175] <... socket resumed>) = 5 [pid 6174] exit_group(0 [pid 6178] <... bpf resumed>) = 3 [pid 6177] <... bpf resumed>) = 3 [pid 6176] write(6, "3", 1 [pid 6175] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6174] <... exit_group resumed>) = ? [pid 6176] <... write resumed>) = 1 [pid 6176] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6175] <... openat resumed>) = 6 [pid 6178] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6176] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6178] <... bpf resumed>) = 4 [pid 6177] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6176] exit_group(0 [pid 6175] write(6, "3", 1 [pid 6178] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6177] <... bpf resumed>) = 4 [pid 6174] +++ exited with 0 +++ [pid 6176] <... exit_group resumed>) = ? [pid 6175] <... write resumed>) = 1 [pid 6178] <... socket resumed>) = 5 [pid 6177] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6176] +++ exited with 0 +++ [pid 6175] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6174, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6178] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6177] <... socket resumed>) = 5 [pid 6175] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6178] <... openat resumed>) = 6 [pid 6177] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6175] exit_group(0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6176, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6178] write(6, "3", 1 [pid 6175] <... exit_group resumed>) = ? [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6178] <... write resumed>) = 1 [pid 6177] <... openat resumed>) = 6 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6178] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6177] write(6, "3", 1 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6178] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6177] <... write resumed>) = 1 [pid 6175] +++ exited with 0 +++ [pid 6178] exit_group(0 [pid 6177] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6175, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6178] <... exit_group resumed>) = ? [pid 6177] <... sendmsg resumed>) = 28 ./strace-static-x86_64: Process 6179 attached [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6180 attached [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6179 [pid 6180] set_robust_list(0x555556b47660, 24) = 0 [pid 6180] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6180 [pid 6180] <... prctl resumed>) = 0 [pid 6179] set_robust_list(0x555556b47660, 24 [pid 6178] +++ exited with 0 +++ [pid 6177] exit_group(0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6179] <... set_robust_list resumed>) = 0 [pid 6180] setpgid(0, 0 [pid 6179] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6177] <... exit_group resumed>) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6178, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 6181 attached [pid 6180] <... setpgid resumed>) = 0 [pid 6179] <... prctl resumed>) = 0 [pid 6179] setpgid(0, 0) = 0 [pid 6179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6179] write(3, "1000", 4) = 4 [pid 6180] <... openat resumed>) = 3 [pid 6179] close(3) = 0 [pid 6181] set_robust_list(0x555556b47660, 24 [pid 6180] write(3, "1000", 4 [pid 6179] write(1, "executing program\n", 18executing program [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6181 [pid 6181] <... set_robust_list resumed>) = 0 [pid 6180] <... write resumed>) = 4 [pid 6179] <... write resumed>) = 18 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6181] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6180] close(3) = 0 [pid 6179] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6182 attached executing program [pid 6177] +++ exited with 0 +++ [pid 6181] <... prctl resumed>) = 0 [pid 6180] write(1, "executing program\n", 18 [pid 6181] setpgid(0, 0 [pid 6180] <... write resumed>) = 18 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6182 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6177, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6181] <... setpgid resumed>) = 0 [pid 6180] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6182] set_robust_list(0x555556b47660, 24 [pid 6181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6179] <... bpf resumed>) = 3 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6182] <... set_robust_list resumed>) = 0 [pid 6182] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6180] <... bpf resumed>) = 3 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6181] <... openat resumed>) = 3 [pid 6182] <... prctl resumed>) = 0 [pid 6182] setpgid(0, 0) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6181] write(3, "1000", 4 [pid 6180] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6179] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6181] <... write resumed>) = 4 executing program [pid 6181] close(3) = 0 [pid 6181] write(1, "executing program\n", 18./strace-static-x86_64: Process 6183 attached [pid 6182] <... openat resumed>) = 3 [pid 6181] <... write resumed>) = 18 [pid 6183] set_robust_list(0x555556b47660, 24 [pid 6182] write(3, "1000", 4 [pid 6181] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6180] <... bpf resumed>) = 4 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6183 [pid 6183] <... set_robust_list resumed>) = 0 [pid 6182] <... write resumed>) = 4 [pid 6181] <... bpf resumed>) = 3 [pid 6179] <... bpf resumed>) = 4 [pid 6183] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6182] close(3 [pid 6180] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6179] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6183] <... prctl resumed>) = 0 [pid 6182] <... close resumed>) = 0 [pid 6181] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6180] <... socket resumed>) = 5 [pid 6182] write(1, "executing program\n", 18 [pid 6181] <... bpf resumed>) = 4 [pid 6180] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWRexecuting program [pid 6183] setpgid(0, 0 [pid 6182] <... write resumed>) = 18 [pid 6181] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6180] <... openat resumed>) = 6 [pid 6179] <... socket resumed>) = 5 [pid 6183] <... setpgid resumed>) = 0 [pid 6182] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6181] <... socket resumed>) = 5 [pid 6180] write(6, "3", 1 [pid 6183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6181] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6180] <... write resumed>) = 1 [pid 6183] <... openat resumed>) = 3 [pid 6181] <... openat resumed>) = 6 [pid 6180] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6182] <... bpf resumed>) = 3 [pid 6181] write(6, "3", 1 [pid 6180] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6179] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6181] <... write resumed>) = 1 [pid 6180] exit_group(0 [pid 6181] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6180] <... exit_group resumed>) = ? [pid 6183] write(3, "1000", 4 [pid 6182] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6181] exit_group(0 [pid 6179] <... openat resumed>) = 6 [pid 6183] <... write resumed>) = 4 [pid 6181] <... exit_group resumed>) = ? [pid 6180] +++ exited with 0 +++ [pid 6179] write(6, "3", 1 [pid 6183] close(3 [pid 6182] <... bpf resumed>) = 4 [pid 6179] <... write resumed>) = 1 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6180, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6183] <... close resumed>) = 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...>executing program [pid 6183] write(1, "executing program\n", 18 [pid 6181] +++ exited with 0 +++ [pid 6183] <... write resumed>) = 18 [pid 6182] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6179] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6183] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6182] <... socket resumed>) = 5 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6181, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5852] <... restart_syscall resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6183] <... bpf resumed>) = 3 [pid 6182] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] <... restart_syscall resumed>) = 0 [pid 6183] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6179] <... sendmsg resumed>) = -1 EFAULT (Bad address) [pid 6182] <... openat resumed>) = 6 ./strace-static-x86_64: Process 6184 attached [pid 6182] write(6, "3", 1 [pid 6183] <... bpf resumed>) = 4 [pid 6182] <... write resumed>) = 1 [pid 6179] exit_group(0 [pid 6183] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6184] set_robust_list(0x555556b47660, 24 [pid 6182] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6179] <... exit_group resumed>) = ? [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6184 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6184] <... set_robust_list resumed>) = 0 [pid 6182] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6184] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6182] exit_group(0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6185 ./strace-static-x86_64: Process 6185 attached [pid 6184] <... prctl resumed>) = 0 [pid 6183] <... socket resumed>) = 5 [pid 6182] <... exit_group resumed>) = ? [pid 6179] +++ exited with 0 +++ [pid 6185] set_robust_list(0x555556b47660, 24 [pid 6183] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6185] <... set_robust_list resumed>) = 0 [pid 6183] <... openat resumed>) = 6 [pid 6185] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6183] write(6, "3", 1 [pid 6185] <... prctl resumed>) = 0 [pid 6183] <... write resumed>) = 1 [pid 6185] setpgid(0, 0 [pid 6183] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6185] <... setpgid resumed>) = 0 [pid 6183] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6183] exit_group(0 [ 97.878800][ T6179] FAULT_INJECTION: forcing a failure. [ 97.878800][ T6179] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 97.892362][ T6179] CPU: 1 UID: 0 PID: 6179 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 97.892395][ T6179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 97.892409][ T6179] Call Trace: [ 97.892416][ T6179] [ 97.892425][ T6179] dump_stack_lvl+0x189/0x250 [ 97.892452][ T6179] ? __pfx____ratelimit+0x10/0x10 [ 97.892481][ T6179] ? __pfx_dump_stack_lvl+0x10/0x10 [ 97.892501][ T6179] ? __pfx__printk+0x10/0x10 [ 97.892523][ T6179] ? __might_fault+0xb0/0x130 [ 97.892565][ T6179] ? rcu_is_watching+0x15/0xb0 [ 97.892600][ T6179] should_fail_ex+0x414/0x560 [ 97.892636][ T6179] _copy_from_user+0x2d/0xb0 [ 97.892676][ T6179] ___sys_sendmsg+0x158/0x2a0 [ 97.892700][ T6179] ? __pfx____sys_sendmsg+0x10/0x10 [ 97.892725][ T6179] ? do_raw_spin_lock+0x121/0x290 [ 97.892772][ T6179] __x64_sys_sendmsg+0x19b/0x260 [ 97.892792][ T6179] ? _raw_spin_unlock_irq+0x2e/0x50 [ 97.892819][ T6179] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 97.892846][ T6179] ? rcu_is_watching+0x15/0xb0 [ 97.892881][ T6179] do_syscall_64+0xfa/0x3b0 [ 97.892904][ T6179] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 97.892918][ T6179] ? clear_bhb_loop+0x60/0xb0 [ 97.892934][ T6179] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 97.892948][ T6179] RIP: 0033:0x7f7d4bd78999 [ 97.892961][ T6179] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 97.892974][ T6179] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 97.892991][ T6179] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [ 97.893002][ T6179] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [ 97.893011][ T6179] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [pid 6185] <... openat resumed>) = 3 [pid 6183] <... exit_group resumed>) = ? [pid 6185] write(3, "1000", 4 [pid 6184] setpgid(0, 0 [pid 6185] <... write resumed>) = 4 [pid 6185] close(3) = 0 [pid 6185] write(1, "executing program\n", 18) = 18 [pid 6185] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148executing program ) = 3 [pid 6185] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6184] <... setpgid resumed>) = 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6179, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6185] <... bpf resumed>) = 4 [pid 6182] +++ exited with 0 +++ [pid 6185] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6185] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6185] write(6, "3", 1) = 1 [pid 6185] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6185] exit_group(0) = ? [pid 6184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6185] +++ exited with 0 +++ [pid 6184] <... openat resumed>) = 3 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6182, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6184] write(3, "1000", 4 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6186 attached [pid 6184] <... write resumed>) = 4 [pid 6183] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6185, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6186 [pid 6186] set_robust_list(0x555556b47660, 24 [pid 6184] close(3 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6186] <... set_robust_list resumed>) = 0 [pid 6184] <... close resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6183, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 6186] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 6187 attached ) = 0 [pid 6184] write(1, "executing program\n", 18executing program [pid 6187] set_robust_list(0x555556b47660, 24 [pid 6186] setpgid(0, 0 [pid 6184] <... write resumed>) = 18 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6187 [pid 6187] <... set_robust_list resumed>) = 0 [pid 6186] <... setpgid resumed>) = 0 [pid 6184] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6187] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 97.893020][ T6179] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 97.893029][ T6179] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 97.893044][ T6179] [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6184] <... bpf resumed>) = 3 [pid 6187] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 6188 attached [pid 6188] set_robust_list(0x555556b47660, 24 [pid 6186] <... openat resumed>) = 3 [pid 6188] <... set_robust_list resumed>) = 0 executing program [pid 6188] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6187] setpgid(0, 0 [pid 6186] write(3, "1000", 4 [pid 6184] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6188 [pid 6187] <... setpgid resumed>) = 0 [pid 6186] <... write resumed>) = 4 [pid 6187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6186] close(3 [pid 6187] <... openat resumed>) = 3 [pid 6186] <... close resumed>) = 0 [pid 6187] write(3, "1000", 4 [pid 6186] write(1, "executing program\n", 18 [pid 6187] <... write resumed>) = 4 [pid 6186] <... write resumed>) = 18 [pid 6184] <... bpf resumed>) = 4 [pid 6184] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6188] <... prctl resumed>) = 0 [pid 6187] close(3 [pid 6186] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6184] <... socket resumed>) = 5 [pid 6188] setpgid(0, 0 [pid 6187] <... close resumed>) = 0 [pid 6184] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6189 attached [pid 6188] <... setpgid resumed>) = 0 [pid 6187] write(1, "executing program\n", 18 [pid 6186] <... bpf resumed>) = 3 [pid 6184] <... openat resumed>) = 6 [pid 6189] set_robust_list(0x555556b47660, 24 [pid 6184] write(6, "3", 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6189 [pid 6189] <... set_robust_list resumed>) = 0 executing program [pid 6184] <... write resumed>) = 1 [pid 6189] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6187] <... write resumed>) = 18 [pid 6186] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6184] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6189] <... prctl resumed>) = 0 [pid 6188] <... openat resumed>) = 3 [pid 6184] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6189] setpgid(0, 0 [pid 6187] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6184] exit_group(0 [pid 6189] <... setpgid resumed>) = 0 [pid 6188] write(3, "1000", 4 [pid 6186] <... bpf resumed>) = 4 [pid 6184] <... exit_group resumed>) = ? [pid 6189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6188] <... write resumed>) = 4 [pid 6187] <... bpf resumed>) = 3 [pid 6186] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6189] <... openat resumed>) = 3 [pid 6189] write(3, "1000", 4 [pid 6188] close(3 [pid 6186] <... socket resumed>) = 5 [pid 6184] +++ exited with 0 +++ [pid 6189] <... write resumed>) = 4 [pid 6188] <... close resumed>) = 0 [pid 6189] close(3 [pid 6187] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6189] <... close resumed>) = 0 executing program executing program [pid 6188] write(1, "executing program\n", 18 [pid 6189] write(1, "executing program\n", 18 [pid 6188] <... write resumed>) = 18 [pid 6189] <... write resumed>) = 18 [pid 6189] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6188] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6186] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6184, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6186] write(6, "3", 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6186] <... write resumed>) = 1 ./strace-static-x86_64: Process 6190 attached [pid 6186] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6190 [pid 6190] set_robust_list(0x555556b47660, 24 [pid 6189] <... bpf resumed>) = 3 [pid 6190] <... set_robust_list resumed>) = 0 [pid 6189] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6188] <... bpf resumed>) = 3 [pid 6186] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6190] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6186] exit_group(0 [pid 6188] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6190] <... prctl resumed>) = 0 [pid 6186] <... exit_group resumed>) = ? [pid 6190] setpgid(0, 0 [pid 6189] <... bpf resumed>) = 4 [pid 6188] <... bpf resumed>) = 4 [pid 6187] <... bpf resumed>) = 4 [pid 6190] <... setpgid resumed>) = 0 [pid 6189] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6188] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6189] <... socket resumed>) = 5 [pid 6188] <... socket resumed>) = 5 [pid 6187] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6190] <... openat resumed>) = 3 [pid 6189] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6188] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6187] <... socket resumed>) = 5 [pid 6190] write(3, "1000", 4 [pid 6189] <... openat resumed>) = 6 [pid 6188] <... openat resumed>) = 6 [pid 6190] <... write resumed>) = 4 [pid 6189] write(6, "3", 1 [pid 6187] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6190] close(3 [pid 6189] <... write resumed>) = 1 [pid 6188] write(6, "3", 1 [pid 6187] <... openat resumed>) = 6 [pid 6190] <... close resumed>) = 0 [pid 6189] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6188] <... write resumed>) = 1 [pid 6187] write(6, "3", 1executing program [pid 6190] write(1, "executing program\n", 18 [pid 6189] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6188] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6187] <... write resumed>) = 1 [pid 6190] <... write resumed>) = 18 [pid 6189] exit_group(0 [pid 6188] <... sendmsg resumed>) = 28 [pid 6187] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6190] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6189] <... exit_group resumed>) = ? [ 98.173540][ T6186] FAULT_INJECTION: forcing a failure. [ 98.173540][ T6186] name failslab, interval 1, probability 0, space 0, times 0 [ 98.186736][ T6186] CPU: 1 UID: 0 PID: 6186 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 98.186768][ T6186] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 98.186781][ T6186] Call Trace: [ 98.186789][ T6186] [ 98.186797][ T6186] dump_stack_lvl+0x189/0x250 [ 98.186822][ T6186] ? __pfx____ratelimit+0x10/0x10 [ 98.186851][ T6186] ? __pfx_dump_stack_lvl+0x10/0x10 [ 98.186871][ T6186] ? __pfx__printk+0x10/0x10 [ 98.186898][ T6186] ? fs_reclaim_acquire+0x7d/0x100 [ 98.186918][ T6186] ? rcu_is_watching+0x15/0xb0 [ 98.186950][ T6186] ? __pfx___might_resched+0x10/0x10 [ 98.186980][ T6186] ? lock_acquire+0x5f/0x360 [ 98.187009][ T6186] should_fail_ex+0x414/0x560 [ 98.187039][ T6186] should_failslab+0xa8/0x100 [ 98.187055][ T6186] kmem_cache_alloc_node_noprof+0x76/0x3c0 [ 98.187082][ T6186] ? __alloc_skb+0x112/0x2d0 [ 98.187114][ T6186] __alloc_skb+0x112/0x2d0 [ 98.187146][ T6186] netlink_sendmsg+0x5c6/0xb30 [ 98.187182][ T6186] ? __pfx_netlink_sendmsg+0x10/0x10 [ 98.187215][ T6186] ? aa_sock_msg_perm+0x94/0x160 [ 98.187243][ T6186] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 98.187268][ T6186] ? __pfx_netlink_sendmsg+0x10/0x10 [ 98.187295][ T6186] __sock_sendmsg+0x219/0x270 [ 98.187319][ T6186] ____sys_sendmsg+0x505/0x830 [ 98.187338][ T6186] ? __pfx_____sys_sendmsg+0x10/0x10 [ 98.187359][ T6186] ? import_iovec+0x74/0xa0 [ 98.187385][ T6186] ___sys_sendmsg+0x21f/0x2a0 [ 98.187403][ T6186] ? __pfx____sys_sendmsg+0x10/0x10 [ 98.187423][ T6186] ? do_raw_spin_lock+0x121/0x290 [ 98.187460][ T6186] __x64_sys_sendmsg+0x19b/0x260 [ 98.187477][ T6186] ? _raw_spin_unlock_irq+0x2e/0x50 [ 98.187500][ T6186] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 98.187532][ T6186] ? rcu_is_watching+0x15/0xb0 [ 98.187563][ T6186] do_syscall_64+0xfa/0x3b0 [ 98.187590][ T6186] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 98.187607][ T6186] ? clear_bhb_loop+0x60/0xb0 [ 98.187626][ T6186] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 98.187642][ T6186] RIP: 0033:0x7f7d4bd78999 [ 98.187658][ T6186] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 98.187672][ T6186] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 98.187694][ T6186] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [pid 6188] exit_group(0 [pid 6187] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6190] <... bpf resumed>) = 3 [pid 6188] <... exit_group resumed>) = ? [pid 6190] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6189] +++ exited with 0 +++ [pid 6187] exit_group(0 [pid 6190] <... bpf resumed>) = 4 [pid 6187] <... exit_group resumed>) = ? [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6189, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6190] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6187] +++ exited with 0 +++ [pid 6186] +++ exited with 0 +++ [pid 6190] <... socket resumed>) = 5 [pid 6190] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6187, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6190] <... openat resumed>) = 6 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6192 attached [pid 6190] write(6, "3", 1 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6186, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 6192] set_robust_list(0x555556b47660, 24 [pid 6190] <... write resumed>) = 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6192 [pid 6192] <... set_robust_list resumed>) = 0 [pid 6190] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 6193 attached [pid 6192] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6190] <... sendmsg resumed>) = 28 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6193] set_robust_list(0x555556b47660, 24 [pid 6192] <... prctl resumed>) = 0 [pid 6190] exit_group(0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6193 [pid 6193] <... set_robust_list resumed>) = 0 [pid 6192] setpgid(0, 0 [pid 6190] <... exit_group resumed>) = ? [pid 6193] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6192] <... setpgid resumed>) = 0 [pid 6188] +++ exited with 0 +++ [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6194 ./strace-static-x86_64: Process 6194 attached [pid 6194] set_robust_list(0x555556b47660, 24) = 0 [pid 6194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6194] setpgid(0, 0) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6188, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 s */} --- [pid 6190] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6190, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [ 98.187707][ T6186] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [ 98.187718][ T6186] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [ 98.187728][ T6186] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 98.187739][ T6186] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 98.187757][ T6186] [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program executing program executing program [pid 6193] <... prctl resumed>) = 0 [pid 6192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5845] <... restart_syscall resumed>) = 0 [pid 6193] setpgid(0, 0 [pid 6194] <... openat resumed>) = 3 [pid 6193] <... setpgid resumed>) = 0 [pid 6192] <... openat resumed>) = 3 [pid 6194] write(3, "1000", 4 [pid 6193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6192] write(3, "1000", 4) = 4 [pid 6192] close(3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6194] <... write resumed>) = 4 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6195 attached ./strace-static-x86_64: Process 6196 attached [pid 6194] close(3 [pid 6193] <... openat resumed>) = 3 [pid 6192] <... close resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6195 [pid 6195] set_robust_list(0x555556b47660, 24 [pid 6193] write(3, "1000", 4 [pid 6192] write(1, "executing program\n", 18 [pid 6196] set_robust_list(0x555556b47660, 24 [pid 6195] <... set_robust_list resumed>) = 0 [pid 6193] <... write resumed>) = 4 [pid 6192] <... write resumed>) = 18 [pid 6196] <... set_robust_list resumed>) = 0 [pid 6195] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6194] <... close resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6196 [pid 6194] write(1, "executing program\n", 18 [pid 6192] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6196] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6195] <... prctl resumed>) = 0 [pid 6193] close(3 [pid 6194] <... write resumed>) = 18 [pid 6194] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6196] <... prctl resumed>) = 0 [pid 6195] setpgid(0, 0 [pid 6194] <... bpf resumed>) = 3 [pid 6193] <... close resumed>) = 0 [pid 6192] <... bpf resumed>) = 3 [pid 6193] write(1, "executing program\n", 18 [pid 6196] setpgid(0, 0 [pid 6195] <... setpgid resumed>) = 0 [pid 6194] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6193] <... write resumed>) = 18 [pid 6196] <... setpgid resumed>) = 0 [pid 6194] <... bpf resumed>) = 4 [pid 6193] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6195] <... openat resumed>) = 3 [pid 6194] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6194] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6195] write(3, "1000", 4 [pid 6194] <... openat resumed>) = 6 [pid 6193] <... bpf resumed>) = 3 [pid 6196] <... openat resumed>) = 3 [pid 6195] <... write resumed>) = 4 [pid 6194] write(6, "3", 1) = 1 [pid 6194] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6194] exit_group(0) = ? [pid 6196] write(3, "1000", 4 [pid 6195] close(3 [pid 6193] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6192] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6196] <... write resumed>) = 4 executing program executing program [pid 6195] <... close resumed>) = 0 [pid 6194] +++ exited with 0 +++ [pid 6196] close(3 [pid 6195] write(1, "executing program\n", 18 [pid 6196] <... close resumed>) = 0 [pid 6195] <... write resumed>) = 18 [pid 6196] write(1, "executing program\n", 18 [pid 6195] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6196] <... write resumed>) = 18 [pid 6193] <... bpf resumed>) = 4 [pid 6192] <... bpf resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6194, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6196] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6192] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6195] <... bpf resumed>) = 3 [pid 6193] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6192] <... socket resumed>) = 5 [pid 6196] <... bpf resumed>) = 3 [pid 6192] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6193] <... socket resumed>) = 5 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6197 ./strace-static-x86_64: Process 6197 attached [pid 6193] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6197] set_robust_list(0x555556b47660, 24) = 0 [pid 6197] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6192] <... openat resumed>) = 6 [pid 6193] <... openat resumed>) = 6 [pid 6197] <... prctl resumed>) = 0 [pid 6197] setpgid(0, 0) = 0 [pid 6197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6197] write(3, "1000", 4) = 4 [pid 6197] close(3) = 0 executing program [pid 6197] write(1, "executing program\n", 18) = 18 [pid 6197] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6196] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6195] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6193] write(6, "3", 1 [pid 6192] write(6, "3", 1 [pid 6197] <... bpf resumed>) = 3 [pid 6196] <... bpf resumed>) = 4 [pid 6195] <... bpf resumed>) = 4 [pid 6193] <... write resumed>) = 1 [pid 6192] <... write resumed>) = 1 [pid 6197] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6196] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6195] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6193] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6192] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6197] <... bpf resumed>) = 4 [pid 6196] <... socket resumed>) = 5 [pid 6195] <... socket resumed>) = 5 [pid 6193] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6192] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6196] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6195] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6193] exit_group(0 [pid 6192] exit_group(0 [pid 6197] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6196] <... openat resumed>) = 6 [pid 6195] <... openat resumed>) = 6 [pid 6193] <... exit_group resumed>) = ? [pid 6192] <... exit_group resumed>) = ? [pid 6197] <... socket resumed>) = 5 [pid 6196] write(6, "3", 1 [pid 6195] write(6, "3", 1 [pid 6192] +++ exited with 0 +++ [pid 6193] +++ exited with 0 +++ [pid 6195] <... write resumed>) = 1 [pid 6197] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6196] <... write resumed>) = 1 [pid 6195] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6193, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6192, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6197] <... openat resumed>) = 6 [pid 6196] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6195] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6195] exit_group(0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6195] <... exit_group resumed>) = ? [pid 6197] write(6, "3", 1 [pid 6196] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6195] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6195, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6197] <... write resumed>) = 1 [pid 6196] exit_group(0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6199 attached ./strace-static-x86_64: Process 6198 attached [pid 6197] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6196] <... exit_group resumed>) = ? [pid 6199] set_robust_list(0x555556b47660, 24 [pid 6198] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6198 [pid 6199] <... set_robust_list resumed>) = 0 [pid 6197] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6199] setpgid(0, 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6199 [pid 6198] <... set_robust_list resumed>) = 0 [pid 6197] exit_group(0 [pid 6199] <... setpgid resumed>) = 0 [pid 6199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6197] <... exit_group resumed>) = ? [pid 6196] +++ exited with 0 +++ [pid 6199] <... openat resumed>) = 3 [pid 6198] <... prctl resumed>) = 0 [pid 6199] write(3, "1000", 4 [pid 6198] setpgid(0, 0 [pid 6197] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6196, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6199] <... write resumed>) = 4 [pid 6198] <... setpgid resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6197, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6199] close(3 [pid 6198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5845] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 6200 attached [pid 6199] <... close resumed>) = 0 [pid 6200] set_robust_list(0x555556b47660, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6200 [pid 6200] <... set_robust_list resumed>) = 0 [pid 6200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6200] setpgid(0, 0) = 0 [pid 6200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6200] write(3, "1000", 4) = 4 [pid 6200] close(3) = 0 [pid 6200] write(1, "executing program\n", 18executing program ) = 18 [pid 6200] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148executing program ) = 3 [pid 6199] write(1, "executing program\n", 18 [pid 6200] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6199] <... write resumed>) = 18 [pid 6198] <... openat resumed>) = 3 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6199] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6201 attached [pid 6200] <... bpf resumed>) = 4 [pid 6198] write(3, "1000", 4 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6201] set_robust_list(0x555556b47660, 24 [pid 6200] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6199] <... bpf resumed>) = 3 [pid 6198] <... write resumed>) = 4 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6201 ./strace-static-x86_64: Process 6202 attached [pid 6201] <... set_robust_list resumed>) = 0 [pid 6200] <... socket resumed>) = 5 [pid 6199] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6198] close(3 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6202 [pid 6202] set_robust_list(0x555556b47660, 24 [pid 6201] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6200] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6198] <... close resumed>) = 0 [pid 6199] <... bpf resumed>) = 4 executing program [pid 6201] <... prctl resumed>) = 0 [pid 6198] write(1, "executing program\n", 18 [pid 6202] <... set_robust_list resumed>) = 0 [pid 6201] setpgid(0, 0 [pid 6198] <... write resumed>) = 18 [pid 6202] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6201] <... setpgid resumed>) = 0 [pid 6200] <... openat resumed>) = 6 [pid 6199] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6202] <... prctl resumed>) = 0 [pid 6201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6200] write(6, "3", 1 [pid 6199] <... socket resumed>) = 5 [pid 6201] <... openat resumed>) = 3 [pid 6202] setpgid(0, 0 [pid 6201] write(3, "1000", 4 [pid 6200] <... write resumed>) = 1 [pid 6199] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6201] <... write resumed>) = 4 [pid 6198] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6201] close(3 [pid 6202] <... setpgid resumed>) = 0 [pid 6201] <... close resumed>) = 0 [pid 6200] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6199] <... openat resumed>) = 6 [pid 6202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6200] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6199] write(6, "3", 1 [pid 6198] <... bpf resumed>) = 3 executing program [pid 6202] <... openat resumed>) = 3 [pid 6200] exit_group(0 [pid 6199] <... write resumed>) = 1 [pid 6201] write(1, "executing program\n", 18 [pid 6202] write(3, "1000", 4 [pid 6200] <... exit_group resumed>) = ? [pid 6199] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6202] <... write resumed>) = 4 [pid 6201] <... write resumed>) = 18 [pid 6199] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6198] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6201] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6199] exit_group(0 [pid 6198] <... bpf resumed>) = 4 [pid 6202] close(3 [pid 6200] +++ exited with 0 +++ [pid 6202] <... close resumed>) = 0 [pid 6202] write(1, "executing program\n", 18 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6200, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- executing program [pid 6202] <... write resumed>) = 18 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6202] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6201] <... bpf resumed>) = 3 [pid 6199] <... exit_group resumed>) = ? [pid 6198] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] <... restart_syscall resumed>) = 0 [pid 6198] <... socket resumed>) = 5 [pid 6202] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6198] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6202] <... bpf resumed>) = 4 [pid 6202] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6202] <... socket resumed>) = 5 [pid 6201] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6198] <... openat resumed>) = 6 ./strace-static-x86_64: Process 6203 attached [pid 6202] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6201] <... bpf resumed>) = 4 [pid 6199] +++ exited with 0 +++ [pid 6203] set_robust_list(0x555556b47660, 24 [pid 6198] write(6, "3", 1 [pid 6203] <... set_robust_list resumed>) = 0 [pid 6202] <... openat resumed>) = 6 [pid 6201] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6198] <... write resumed>) = 1 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6203 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6199, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 6203] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6202] write(6, "3", 1 [pid 6201] <... socket resumed>) = 5 [pid 6198] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6203] <... prctl resumed>) = 0 [pid 6202] <... write resumed>) = 1 [pid 6201] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6198] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6203] setpgid(0, 0 [pid 6202] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6201] <... openat resumed>) = 6 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6203] <... setpgid resumed>) = 0 [pid 6202] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6201] write(6, "3", 1 [pid 6198] exit_group(0 [pid 6203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6201] <... write resumed>) = 1 [pid 6198] <... exit_group resumed>) = ? [pid 6203] <... openat resumed>) = 3 [pid 6202] exit_group(0 [pid 6198] +++ exited with 0 +++ [pid 6203] write(3, "1000", 4 [pid 6201] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6203] <... write resumed>) = 4 [pid 6202] <... exit_group resumed>) = ? [pid 6201] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6203] close(3 [pid 6201] exit_group(0 [pid 6203] <... close resumed>) = 0 [pid 6201] <... exit_group resumed>) = ? [pid 6203] write(1, "executing program\n", 18 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6198, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program ./strace-static-x86_64: Process 6204 attached [pid 6203] <... write resumed>) = 18 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6203] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6204] set_robust_list(0x555556b47660, 24) = 0 [pid 6203] <... bpf resumed>) = 3 [pid 6202] +++ exited with 0 +++ [pid 6201] +++ exited with 0 +++ [pid 5852] <... restart_syscall resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6204 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6201, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6204] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6202, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6204] <... prctl resumed>) = 0 [pid 5845] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6205 attached [pid 6203] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6204] setpgid(0, 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6205 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6204] <... setpgid resumed>) = 0 [pid 6205] set_robust_list(0x555556b47660, 24 [pid 6204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6203] <... bpf resumed>) = 4 [pid 6205] <... set_robust_list resumed>) = 0 [pid 6204] <... openat resumed>) = 3 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6204] write(3, "1000", 4 [pid 6205] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6203] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 6206 attached [pid 6205] <... prctl resumed>) = 0 [pid 6204] <... write resumed>) = 4 [pid 6203] <... socket resumed>) = 5 [pid 6206] set_robust_list(0x555556b47660, 24 [pid 6205] setpgid(0, 0 [pid 6204] close(3 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6206 ./strace-static-x86_64: Process 6207 attached [pid 6206] <... set_robust_list resumed>) = 0 [pid 6205] <... setpgid resumed>) = 0 [pid 6204] <... close resumed>) = 0 [pid 6203] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6207] set_robust_list(0x555556b47660, 24 [pid 6206] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC executing program [pid 6204] write(1, "executing program\n", 18 [pid 6203] <... openat resumed>) = 6 [pid 6207] <... set_robust_list resumed>) = 0 [pid 6206] <... prctl resumed>) = 0 [pid 6205] <... openat resumed>) = 3 [pid 6204] <... write resumed>) = 18 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6207 [pid 6207] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6206] setpgid(0, 0 [pid 6205] write(3, "1000", 4 executing program [pid 6204] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6203] write(6, "3", 1 [pid 6207] <... prctl resumed>) = 0 [pid 6206] <... setpgid resumed>) = 0 [pid 6205] <... write resumed>) = 4 [pid 6203] <... write resumed>) = 1 [pid 6205] close(3 [pid 6203] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6205] <... close resumed>) = 0 [pid 6203] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6205] write(1, "executing program\n", 18 [pid 6203] exit_group(0 [pid 6205] <... write resumed>) = 18 [pid 6203] <... exit_group resumed>) = ? [pid 6205] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6207] setpgid(0, 0 [pid 6206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6204] <... bpf resumed>) = 3 [pid 6207] <... setpgid resumed>) = 0 [pid 6206] <... openat resumed>) = 3 [pid 6207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6206] write(3, "1000", 4 [pid 6205] <... bpf resumed>) = 3 [pid 6204] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6207] <... openat resumed>) = 3 [pid 6206] <... write resumed>) = 4 [pid 6207] write(3, "1000", 4 [pid 6206] close(3 [pid 6205] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6204] <... bpf resumed>) = 4 [pid 6207] <... write resumed>) = 4 [pid 6206] <... close resumed>) = 0 [pid 6203] +++ exited with 0 +++ [pid 6204] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6207] close(3 executing program [pid 6206] write(1, "executing program\n", 18 [pid 6207] <... close resumed>) = 0 executing program [pid 6204] <... socket resumed>) = 5 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6203, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6207] write(1, "executing program\n", 18 [pid 6206] <... write resumed>) = 18 [pid 6204] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6207] <... write resumed>) = 18 [pid 6206] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6205] <... bpf resumed>) = 4 [pid 6204] <... openat resumed>) = 6 [pid 6207] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6205] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] <... restart_syscall resumed>) = 0 [pid 6205] <... socket resumed>) = 5 [pid 6205] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6207] <... bpf resumed>) = 3 [pid 6205] write(6, "3", 1 [pid 6207] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6206] <... bpf resumed>) = 3 [pid 6204] write(6, "3", 1 [pid 6207] <... bpf resumed>) = 4 [pid 6206] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6205] <... write resumed>) = 1 [pid 6204] <... write resumed>) = 1 [pid 6207] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6206] <... bpf resumed>) = 4 [pid 6205] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6207] <... socket resumed>) = 5 [pid 6206] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6205] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6204] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6207] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6206] <... socket resumed>) = 5 [pid 6205] exit_group(0 [pid 6204] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6205] <... exit_group resumed>) = ? [pid 6204] exit_group(0 [pid 6207] <... openat resumed>) = 6 [pid 6206] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6204] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 6208 attached [pid 6207] write(6, "3", 1 [pid 6206] <... openat resumed>) = 6 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6208 [pid 6207] <... write resumed>) = 1 [pid 6206] write(6, "3", 1 [pid 6208] set_robust_list(0x555556b47660, 24 [pid 6204] +++ exited with 0 +++ [pid 6208] <... set_robust_list resumed>) = 0 [pid 6207] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6206] <... write resumed>) = 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6204, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6208] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6208] <... prctl resumed>) = 0 [pid 6208] setpgid(0, 0 [pid 6207] <... sendmsg resumed>) = 28 [pid 6206] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6208] <... setpgid resumed>) = 0 [pid 6208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6207] exit_group(0 [pid 6206] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6208] <... openat resumed>) = 3 [pid 6208] write(3, "1000", 4 [pid 6207] <... exit_group resumed>) = ? [pid 6206] exit_group(0 [pid 6205] +++ exited with 0 +++ [pid 6208] <... write resumed>) = 4 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6205, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6208] close(3 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6208] <... close resumed>) = 0 executing program [pid 6208] write(1, "executing program\n", 18 [pid 6206] <... exit_group resumed>) = ? [pid 6208] <... write resumed>) = 18 [pid 6207] +++ exited with 0 +++ [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6208] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6206] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6207, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6206, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6209 attached [pid 6209] set_robust_list(0x555556b47660, 24 [pid 6208] <... bpf resumed>) = 3 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6209 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6209] <... set_robust_list resumed>) = 0 [pid 6209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6209] setpgid(0, 0) = 0 [pid 6209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] <... restart_syscall resumed>) = 0 [pid 6209] <... openat resumed>) = 3 [pid 6209] write(3, "1000", 4./strace-static-x86_64: Process 6210 attached ) = 4 [pid 6208] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6209] close(3) = 0 [pid 6209] write(1, "executing program\n", 18 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6210 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6209] <... write resumed>) = 18 [pid 6209] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6211 attached ) = 3 executing program [pid 6211] set_robust_list(0x555556b47660, 24 [pid 6209] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6211 [pid 6211] <... set_robust_list resumed>) = 0 [pid 6210] set_robust_list(0x555556b47660, 24./strace-static-x86_64: Process 6212 attached [pid 6211] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6210] <... set_robust_list resumed>) = 0 [pid 6212] set_robust_list(0x555556b47660, 24 [pid 6211] <... prctl resumed>) = 0 [pid 6208] <... bpf resumed>) = 4 [pid 6212] <... set_robust_list resumed>) = 0 [pid 6211] setpgid(0, 0 [pid 6212] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6211] <... setpgid resumed>) = 0 [pid 6212] <... prctl resumed>) = 0 [pid 6211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6212] setpgid(0, 0 [pid 6211] <... openat resumed>) = 3 [pid 6210] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6212] <... setpgid resumed>) = 0 [pid 6211] write(3, "1000", 4 [pid 6212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6211] <... write resumed>) = 4 [pid 6210] <... prctl resumed>) = 0 [pid 6209] <... bpf resumed>) = 4 [pid 6208] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6212 [pid 6210] setpgid(0, 0 [pid 6208] <... socket resumed>) = 5 [pid 6210] <... setpgid resumed>) = 0 [pid 6212] <... openat resumed>) = 3 [pid 6211] close(3 [pid 6210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6208] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6209] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6210] <... openat resumed>) = 3 [pid 6212] write(3, "1000", 4 [pid 6211] <... close resumed>) = 0 [pid 6208] <... openat resumed>) = 6 [pid 6210] write(3, "1000", 4 [pid 6209] <... socket resumed>) = 5 [pid 6212] <... write resumed>) = 4 executing program [pid 6211] write(1, "executing program\n", 18 [pid 6210] <... write resumed>) = 4 [pid 6209] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6212] close(3 [pid 6211] <... write resumed>) = 18 [pid 6210] close(3 [pid 6209] <... openat resumed>) = 6 [pid 6210] <... close resumed>) = 0 [pid 6208] write(6, "3", 1 [pid 6212] <... close resumed>) = 0 [pid 6211] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6210] write(1, "executing program\n", 18 executing program [pid 6209] write(6, "3", 1 [pid 6208] <... write resumed>) = 1 [pid 6212] write(1, "executing program\n", 18executing program [pid 6210] <... write resumed>) = 18 [pid 6209] <... write resumed>) = 1 [pid 6208] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6211] <... bpf resumed>) = 3 [pid 6212] <... write resumed>) = 18 [pid 6210] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6209] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6208] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6212] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6211] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6209] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6208] exit_group(0 [pid 6211] <... bpf resumed>) = 4 [pid 6209] exit_group(0 [pid 6211] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6209] <... exit_group resumed>) = ? [pid 6208] <... exit_group resumed>) = ? [pid 6210] <... bpf resumed>) = 3 [pid 6212] <... bpf resumed>) = 3 [pid 6212] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6212] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6212] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6208] +++ exited with 0 +++ [pid 6212] <... openat resumed>) = 6 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6208, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6212] write(6, "3", 1) = 1 [pid 6212] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6211] <... socket resumed>) = 5 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6210] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6211] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6212] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6211] <... openat resumed>) = 6 [pid 6212] exit_group(0 [pid 6211] write(6, "3", 1 [pid 6210] <... bpf resumed>) = 4 [pid 6211] <... write resumed>) = 1 [pid 6209] +++ exited with 0 +++ [pid 6212] <... exit_group resumed>) = ? [pid 6211] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6210] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6212] +++ exited with 0 +++ [pid 6211] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6210] <... socket resumed>) = 5 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6209, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6211] exit_group(0 [pid 6210] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6212, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6210] <... openat resumed>) = 6 [pid 6211] <... exit_group resumed>) = ? [pid 5848] <... restart_syscall resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6210] write(6, "3", 1) = 1 [pid 6210] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6210] exit_group(0./strace-static-x86_64: Process 6213 attached ) = ? [pid 6213] set_robust_list(0x555556b47660, 24) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6213 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6213] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 6214 attached ) = 0 [pid 6211] +++ exited with 0 +++ [pid 6213] setpgid(0, 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6211, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6214] set_robust_list(0x555556b47660, 24 [pid 6213] <... setpgid resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6214 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6214] <... set_robust_list resumed>) = 0 [pid 6213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6210] +++ exited with 0 +++ [pid 6214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6210, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6214] setpgid(0, 0 [pid 6213] <... openat resumed>) = 3 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6213] write(3, "1000", 4) = 4 [pid 6213] close(3 [pid 6214] <... setpgid resumed>) = 0 [pid 6213] <... close resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6213] write(1, "executing program\n", 18executing program [pid 6214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6213] <... write resumed>) = 18 [pid 6213] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6214] <... openat resumed>) = 3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6216 attached [pid 6214] write(3, "1000", 4executing program ./strace-static-x86_64: Process 6217 attached ./strace-static-x86_64: Process 6215 attached [pid 6216] set_robust_list(0x555556b47660, 24 [pid 6214] <... write resumed>) = 4 [pid 6214] close(3) = 0 [pid 6214] write(1, "executing program\n", 18 [pid 6216] <... set_robust_list resumed>) = 0 [pid 6214] <... write resumed>) = 18 [pid 6215] set_robust_list(0x555556b47660, 24 [pid 6216] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6214] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6217] set_robust_list(0x555556b47660, 24 [pid 6216] <... prctl resumed>) = 0 [pid 6213] <... bpf resumed>) = 3 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6215 [pid 6216] setpgid(0, 0 [pid 6217] <... set_robust_list resumed>) = 0 [pid 6216] <... setpgid resumed>) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6216 [pid 6217] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6215] <... set_robust_list resumed>) = 0 [pid 6216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6214] <... bpf resumed>) = 3 [pid 6213] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6217 [pid 6217] <... prctl resumed>) = 0 [pid 6215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6215] setpgid(0, 0 [pid 6217] setpgid(0, 0 [pid 6216] <... openat resumed>) = 3 [pid 6214] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6213] <... bpf resumed>) = 4 [pid 6215] <... setpgid resumed>) = 0 [pid 6217] <... setpgid resumed>) = 0 [pid 6215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6216] write(3, "1000", 4 [pid 6217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6216] <... write resumed>) = 4 [pid 6213] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6215] <... openat resumed>) = 3 [pid 6216] close(3 [pid 6213] <... socket resumed>) = 5 [pid 6217] <... openat resumed>) = 3 [pid 6215] write(3, "1000", 4 [pid 6216] <... close resumed>) = 0 [pid 6214] <... bpf resumed>) = 4 [pid 6213] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6217] write(3, "1000", 4 [pid 6215] <... write resumed>) = 4 [pid 6215] close(3 [pid 6217] <... write resumed>) = 4 [pid 6215] <... close resumed>) = 0 [pid 6216] write(1, "executing program\n", 18 [pid 6214] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6213] <... openat resumed>) = 6 executing program [pid 6217] close(3 executing program [pid 6215] write(1, "executing program\n", 18 [pid 6216] <... write resumed>) = 18 [pid 6214] <... socket resumed>) = 5 [pid 6215] <... write resumed>) = 18 [pid 6216] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6214] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6217] <... close resumed>) = 0 executing program [pid 6215] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6213] write(6, "3", 1 [pid 6217] write(1, "executing program\n", 18 [pid 6214] <... openat resumed>) = 6 [pid 6217] <... write resumed>) = 18 [pid 6217] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6217] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6215] <... bpf resumed>) = 3 [pid 6216] <... bpf resumed>) = 3 [pid 6214] write(6, "3", 1 [pid 6213] <... write resumed>) = 1 [pid 6216] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6214] <... write resumed>) = 1 [pid 6217] <... bpf resumed>) = 4 [pid 6215] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6214] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6213] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6216] <... bpf resumed>) = 4 [pid 6217] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6215] <... bpf resumed>) = 4 [pid 6216] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6214] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6213] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6217] <... socket resumed>) = 5 [pid 6215] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6216] <... socket resumed>) = 5 [pid 6214] exit_group(0 [pid 6217] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6215] <... socket resumed>) = 5 [pid 6216] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6214] <... exit_group resumed>) = ? [pid 6213] exit_group(0 [pid 6217] <... openat resumed>) = 6 [pid 6215] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6216] <... openat resumed>) = 6 [pid 6217] write(6, "3", 1 [pid 6215] <... openat resumed>) = 6 [pid 6213] <... exit_group resumed>) = ? [pid 6217] <... write resumed>) = 1 [pid 6216] write(6, "3", 1 [pid 6214] +++ exited with 0 +++ [pid 6217] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6216] <... write resumed>) = 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6214, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6217] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6215] write(6, "3", 1 [pid 6216] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6217] exit_group(0 [pid 6215] <... write resumed>) = 1 [pid 6216] <... sendmsg resumed>) = 28 [pid 6213] +++ exited with 0 +++ [pid 5848] <... restart_syscall resumed>) = 0 [pid 6217] <... exit_group resumed>) = ? [pid 6216] exit_group(0 [pid 6215] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6216] <... exit_group resumed>) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6213, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6217] +++ exited with 0 +++ [pid 6215] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6215] exit_group(0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6215] <... exit_group resumed>) = ? [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6217, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6216] +++ exited with 0 +++ [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6216, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6218 ./strace-static-x86_64: Process 6219 attached ./strace-static-x86_64: Process 6218 attached [pid 6215] +++ exited with 0 +++ [pid 5852] <... restart_syscall resumed>) = 0 [pid 6218] set_robust_list(0x555556b47660, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6219 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6215, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6219] set_robust_list(0x555556b47660, 24) = 0 [pid 6218] <... set_robust_list resumed>) = 0 [pid 6219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6218] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6219] setpgid(0, 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6220 attached [pid 6219] <... setpgid resumed>) = 0 [pid 6218] <... prctl resumed>) = 0 [pid 6218] setpgid(0, 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6221 attached ./strace-static-x86_64: Process 6222 attached [pid 6220] set_robust_list(0x555556b47660, 24 [pid 6219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6218] <... setpgid resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6220 [pid 6222] set_robust_list(0x555556b47660, 24) = 0 [pid 6221] set_robust_list(0x555556b47660, 24 [pid 6220] <... set_robust_list resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6222 [pid 6222] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6221] <... set_robust_list resumed>) = 0 [pid 6219] <... openat resumed>) = 3 [pid 6218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6221 [pid 6221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6222] <... prctl resumed>) = 0 [pid 6222] setpgid(0, 0 [pid 6221] setpgid(0, 0 [pid 6220] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6219] write(3, "1000", 4 [pid 6218] <... openat resumed>) = 3 [pid 6222] <... setpgid resumed>) = 0 [pid 6221] <... setpgid resumed>) = 0 [pid 6220] <... prctl resumed>) = 0 [pid 6219] <... write resumed>) = 4 [pid 6218] write(3, "1000", 4 [pid 6221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6220] setpgid(0, 0 [pid 6219] close(3 [pid 6218] <... write resumed>) = 4 [pid 6221] <... openat resumed>) = 3 [pid 6220] <... setpgid resumed>) = 0 [pid 6219] <... close resumed>) = 0 [pid 6218] close(3 [pid 6222] <... openat resumed>) = 3 [pid 6222] write(3, "1000", 4executing program executing program [pid 6220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6222] <... write resumed>) = 4 [pid 6221] write(3, "1000", 4 [pid 6219] write(1, "executing program\n", 18 [pid 6218] <... close resumed>) = 0 [pid 6222] close(3 [pid 6219] <... write resumed>) = 18 [pid 6218] write(1, "executing program\n", 18 [pid 6222] <... close resumed>) = 0 [pid 6221] <... write resumed>) = 4 [pid 6220] <... openat resumed>) = 3 [pid 6219] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 executing program [pid 6218] <... write resumed>) = 18 [pid 6222] write(1, "executing program\n", 18 [pid 6221] close(3 [pid 6220] write(3, "1000", 4 [pid 6222] <... write resumed>) = 18 [pid 6220] <... write resumed>) = 4 [pid 6218] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6222] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6220] close(3 [pid 6221] <... close resumed>) = 0 [pid 6219] <... bpf resumed>) = 3 [pid 6218] <... bpf resumed>) = 3 [pid 6221] write(1, "executing program\n", 18 [pid 6222] <... bpf resumed>) = 3 [pid 6220] <... close resumed>) = 0 executing program [pid 6222] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6221] <... write resumed>) = 18 [pid 6220] write(1, "executing program\n", 18executing program [pid 6219] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6222] <... bpf resumed>) = 4 [pid 6221] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6220] <... write resumed>) = 18 [pid 6218] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6222] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6220] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6219] <... bpf resumed>) = 4 [pid 6218] <... bpf resumed>) = 4 [pid 6222] <... socket resumed>) = 5 [pid 6221] <... bpf resumed>) = 3 [pid 6222] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6220] <... bpf resumed>) = 3 [pid 6222] <... openat resumed>) = 6 [pid 6221] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6220] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6219] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6218] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6222] write(6, "3", 1 [pid 6220] <... bpf resumed>) = 4 [pid 6219] <... socket resumed>) = 5 [pid 6218] <... socket resumed>) = 5 [pid 6222] <... write resumed>) = 1 [pid 6221] <... bpf resumed>) = 4 [pid 6220] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6219] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6218] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6222] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6221] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6220] <... socket resumed>) = 5 [pid 6219] <... openat resumed>) = 6 [pid 6218] <... openat resumed>) = 6 [pid 6222] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6221] <... socket resumed>) = 5 [pid 6220] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6222] exit_group(0 [pid 6221] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6220] <... openat resumed>) = 6 [pid 6219] write(6, "3", 1 [pid 6218] write(6, "3", 1 [pid 6222] <... exit_group resumed>) = ? [pid 6221] <... openat resumed>) = 6 [pid 6220] write(6, "3", 1 [pid 6219] <... write resumed>) = 1 [pid 6222] +++ exited with 0 +++ [pid 6221] write(6, "3", 1 [pid 6220] <... write resumed>) = 1 [pid 6219] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6218] <... write resumed>) = 1 [pid 6221] <... write resumed>) = 1 [pid 6220] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6219] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6218] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6222, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6221] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6220] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6219] exit_group(0 [pid 6218] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6221] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6220] exit_group(0 [pid 6219] <... exit_group resumed>) = ? [pid 6218] exit_group(0 [pid 6221] exit_group(0 [pid 6220] <... exit_group resumed>) = ? [pid 6218] <... exit_group resumed>) = ? [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6221] <... exit_group resumed>) = ? [pid 6219] +++ exited with 0 +++ ./strace-static-x86_64: Process 6223 attached [pid 6218] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6218, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6223] set_robust_list(0x555556b47660, 24 [pid 6220] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6219, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6223] <... set_robust_list resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6220, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6223 ./strace-static-x86_64: Process 6224 attached [pid 6221] +++ exited with 0 +++ [pid 6223] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6224] set_robust_list(0x555556b47660, 24 [pid 6223] <... prctl resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6221, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] <... restart_syscall resumed>) = 0 [pid 6224] <... set_robust_list resumed>) = 0 [pid 6223] setpgid(0, 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6224 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6224] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6223] <... setpgid resumed>) = 0 [pid 6223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6226 attached ./strace-static-x86_64: Process 6225 attached [pid 6224] <... prctl resumed>) = 0 [pid 6226] set_robust_list(0x555556b47660, 24 [pid 6224] setpgid(0, 0 [pid 6223] <... openat resumed>) = 3 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6226] <... set_robust_list resumed>) = 0 [pid 6224] <... setpgid resumed>) = 0 [pid 6225] set_robust_list(0x555556b47660, 24 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6226 [pid 6225] <... set_robust_list resumed>) = 0 [pid 6224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6225] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6225 ./strace-static-x86_64: Process 6227 attached [pid 6226] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6223] write(3, "1000", 4 [pid 6227] set_robust_list(0x555556b47660, 24 [pid 6226] <... prctl resumed>) = 0 [pid 6225] <... prctl resumed>) = 0 [pid 6224] <... openat resumed>) = 3 [pid 6223] <... write resumed>) = 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6227 [pid 6227] <... set_robust_list resumed>) = 0 [pid 6226] setpgid(0, 0 [pid 6225] setpgid(0, 0 [pid 6223] close(3 [pid 6227] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6226] <... setpgid resumed>) = 0 [pid 6225] <... setpgid resumed>) = 0 [pid 6224] write(3, "1000", 4 [pid 6226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6224] <... write resumed>) = 4 [pid 6223] <... close resumed>) = 0 [pid 6227] <... prctl resumed>) = 0 [pid 6226] <... openat resumed>) = 3 [pid 6225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6224] close(3 [pid 6227] setpgid(0, 0 [pid 6226] write(3, "1000", 4 [pid 6225] <... openat resumed>) = 3 [pid 6224] <... close resumed>) = 0 executing program [pid 6223] write(1, "executing program\n", 18 [pid 6227] <... setpgid resumed>) = 0 [pid 6226] <... write resumed>) = 4 [pid 6227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6226] close(3 [pid 6224] write(1, "executing program\n", 18 [pid 6223] <... write resumed>) = 18 executing program [pid 6226] <... close resumed>) = 0 [pid 6224] <... write resumed>) = 18 executing program [pid 6223] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6227] <... openat resumed>) = 3 [pid 6226] write(1, "executing program\n", 18 [pid 6225] write(3, "1000", 4 [pid 6224] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6226] <... write resumed>) = 18 [pid 6225] <... write resumed>) = 4 [pid 6226] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6227] write(3, "1000", 4 [pid 6223] <... bpf resumed>) = 3 [pid 6226] <... bpf resumed>) = 3 [pid 6225] close(3 [pid 6224] <... bpf resumed>) = 3 executing program [pid 6225] <... close resumed>) = 0 [pid 6225] write(1, "executing program\n", 18 [pid 6227] <... write resumed>) = 4 [pid 6226] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6225] <... write resumed>) = 18 [pid 6224] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6223] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6227] close(3) = 0 [pid 6225] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6227] write(1, "executing program\n", 18executing program [pid 6226] <... bpf resumed>) = 4 [pid 6224] <... bpf resumed>) = 4 [pid 6223] <... bpf resumed>) = 4 [pid 6227] <... write resumed>) = 18 [pid 6226] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6227] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6226] <... socket resumed>) = 5 [pid 6224] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6223] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6226] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6225] <... bpf resumed>) = 3 [pid 6223] <... socket resumed>) = 5 [pid 6226] <... openat resumed>) = 6 [pid 6224] <... socket resumed>) = 5 [pid 6223] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6227] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6226] write(6, "3", 1 [pid 6225] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6224] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6223] <... openat resumed>) = 6 [pid 6227] <... bpf resumed>) = 4 [pid 6226] <... write resumed>) = 1 [pid 6225] <... bpf resumed>) = 4 [pid 6224] <... openat resumed>) = 6 [pid 6223] write(6, "3", 1 [pid 6227] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6226] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6225] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6224] write(6, "3", 1 [pid 6223] <... write resumed>) = 1 [pid 6227] <... socket resumed>) = 5 [pid 6226] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6225] <... socket resumed>) = 5 [pid 6224] <... write resumed>) = 1 [pid 6223] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6227] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6226] exit_group(0 [pid 6225] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6224] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6223] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6227] <... openat resumed>) = 6 [pid 6226] <... exit_group resumed>) = ? [pid 6225] <... openat resumed>) = 6 [pid 6224] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6223] exit_group(0 [pid 6227] write(6, "3", 1 [pid 6225] write(6, "3", 1 [pid 6224] exit_group(0 [pid 6227] <... write resumed>) = 1 [pid 6226] +++ exited with 0 +++ [pid 6225] <... write resumed>) = 1 [pid 6223] <... exit_group resumed>) = ? [pid 6227] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6225] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6224] <... exit_group resumed>) = ? [pid 6227] <... sendmsg resumed>) = 28 [pid 6225] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6223] +++ exited with 0 +++ [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6226, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6227] exit_group(0 [pid 6225] exit_group(0 [pid 6224] +++ exited with 0 +++ [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6227] <... exit_group resumed>) = ? [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6224, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6223, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6225] <... exit_group resumed>) = ? [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5846] <... restart_syscall resumed>) = 0 [pid 6227] +++ exited with 0 +++ [pid 5845] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6227, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6225] +++ exited with 0 +++ ./strace-static-x86_64: Process 6228 attached [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6225, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 6229 attached [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6229] set_robust_list(0x555556b47660, 24 [pid 6228] set_robust_list(0x555556b47660, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6228 [pid 6229] <... set_robust_list resumed>) = 0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6229] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6228] <... set_robust_list resumed>) = 0 [pid 6229] <... prctl resumed>) = 0 [pid 6228] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6229 [pid 6228] <... prctl resumed>) = 0 [pid 6228] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 6230 attached [pid 6229] setpgid(0, 0 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6230] set_robust_list(0x555556b47660, 24) = 0 [pid 6230] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6229] <... setpgid resumed>) = 0 [pid 6228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6230 [pid 6230] <... prctl resumed>) = 0 [pid 6230] setpgid(0, 0) = 0 [pid 6229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6228] <... openat resumed>) = 3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6229] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6231 attached [pid 6231] set_robust_list(0x555556b47660, 24) = 0 [pid 6228] write(3, "1000", 4./strace-static-x86_64: Process 6232 attached [pid 6231] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6231 [pid 6232] set_robust_list(0x555556b47660, 24 [pid 6231] <... prctl resumed>) = 0 [pid 6230] <... openat resumed>) = 3 [pid 6228] <... write resumed>) = 4 [pid 6229] write(3, "1000", 4 [pid 6232] <... set_robust_list resumed>) = 0 [pid 6231] setpgid(0, 0 [pid 6229] <... write resumed>) = 4 [pid 6228] close(3 [pid 6232] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6231] <... setpgid resumed>) = 0 [pid 6228] <... close resumed>) = 0 [pid 6231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6230] write(3, "1000", 4 [pid 6229] close(3 [pid 6228] write(1, "executing program\n", 18 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6232 [pid 6230] <... write resumed>) = 4 [pid 6229] <... close resumed>) = 0 [pid 6230] close(3 [pid 6228] <... write resumed>) = 18 [pid 6230] <... close resumed>) = 0 executing program executing program executing program [pid 6232] <... prctl resumed>) = 0 [pid 6231] <... openat resumed>) = 3 [pid 6230] write(1, "executing program\n", 18 [pid 6229] write(1, "executing program\n", 18 [pid 6228] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6232] setpgid(0, 0 [pid 6231] write(3, "1000", 4 [pid 6230] <... write resumed>) = 18 [pid 6229] <... write resumed>) = 18 [pid 6232] <... setpgid resumed>) = 0 [pid 6231] <... write resumed>) = 4 [pid 6232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6231] close(3 [pid 6229] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6232] <... openat resumed>) = 3 [pid 6231] <... close resumed>) = 0 [pid 6230] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6231] write(1, "executing program\n", 18executing program [pid 6232] write(3, "1000", 4 [pid 6231] <... write resumed>) = 18 [pid 6232] <... write resumed>) = 4 [pid 6231] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6232] close(3 [pid 6231] <... bpf resumed>) = 3 [pid 6232] <... close resumed>) = 0 [pid 6230] <... bpf resumed>) = 3 [pid 6229] <... bpf resumed>) = 3 [pid 6228] <... bpf resumed>) = 3 [pid 6231] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6232] write(1, "executing program\n", 18executing program ) = 18 [pid 6232] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6231] <... bpf resumed>) = 4 [pid 6230] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6229] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6228] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6232] <... bpf resumed>) = 3 [pid 6231] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6230] <... bpf resumed>) = 4 [pid 6232] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6231] <... socket resumed>) = 5 [pid 6229] <... bpf resumed>) = 4 [pid 6228] <... bpf resumed>) = 4 [pid 6232] <... bpf resumed>) = 4 [pid 6231] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6230] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6232] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6231] <... openat resumed>) = 6 [pid 6230] <... socket resumed>) = 5 [pid 6229] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6228] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6232] <... socket resumed>) = 5 [pid 6231] write(6, "3", 1 [pid 6230] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6229] <... socket resumed>) = 5 [pid 6228] <... socket resumed>) = 5 [pid 6232] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6231] <... write resumed>) = 1 [pid 6230] <... openat resumed>) = 6 [pid 6229] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6228] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6232] <... openat resumed>) = 6 [pid 6231] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6229] <... openat resumed>) = 6 [pid 6228] <... openat resumed>) = 6 [pid 6232] write(6, "3", 1 [pid 6231] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6230] write(6, "3", 1 [pid 6229] write(6, "3", 1 [pid 6230] <... write resumed>) = 1 [pid 6228] write(6, "3", 1 [pid 6230] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6230] exit_group(0) = ? [pid 6232] <... write resumed>) = 1 [pid 6231] exit_group(0 [pid 6229] <... write resumed>) = 1 [pid 6228] <... write resumed>) = 1 [pid 6232] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6231] <... exit_group resumed>) = ? [pid 6230] +++ exited with 0 +++ [pid 6229] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6228] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6232] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6229] <... sendmsg resumed>) = 28 [pid 6232] exit_group(0 [pid 6228] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6230, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6232] <... exit_group resumed>) = ? [pid 6231] +++ exited with 0 +++ [pid 6229] exit_group(0 [pid 6228] exit_group(0 [pid 6229] <... exit_group resumed>) = ? [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6231, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6233 attached [pid 5849] <... restart_syscall resumed>) = 0 [pid 6233] set_robust_list(0x555556b47660, 24 [pid 6228] <... exit_group resumed>) = ? [pid 6229] +++ exited with 0 +++ [pid 6233] <... set_robust_list resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6233 [pid 6233] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6229, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6233] <... prctl resumed>) = 0 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6233] setpgid(0, 0) = 0 [pid 6233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6232] +++ exited with 0 +++ [pid 6228] +++ exited with 0 +++ [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... restart_syscall resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6232, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6233] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6234 attached [pid 6233] write(3, "1000", 4 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6228, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6234] set_robust_list(0x555556b47660, 24 [pid 6233] <... write resumed>) = 4 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6234] <... set_robust_list resumed>) = 0 [pid 6233] close(3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6234 ./strace-static-x86_64: Process 6235 attached [pid 6234] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6235] set_robust_list(0x555556b47660, 24 [pid 6234] <... prctl resumed>) = 0 [pid 6233] <... close resumed>) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6235] <... set_robust_list resumed>) = 0 executing program [pid 6233] write(1, "executing program\n", 18./strace-static-x86_64: Process 6236 attached [pid 6235] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6234] setpgid(0, 0 [pid 6233] <... write resumed>) = 18 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6235 ./strace-static-x86_64: Process 6237 attached [pid 6236] set_robust_list(0x555556b47660, 24 [pid 6235] <... prctl resumed>) = 0 [pid 6234] <... setpgid resumed>) = 0 [pid 6233] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6236 [pid 6237] set_robust_list(0x555556b47660, 24 [pid 6236] <... set_robust_list resumed>) = 0 [pid 6235] setpgid(0, 0 [pid 6234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6237] <... set_robust_list resumed>) = 0 [pid 6236] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6237] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6235] <... setpgid resumed>) = 0 [pid 6233] <... bpf resumed>) = 3 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6237 [pid 6234] <... openat resumed>) = 3 [pid 6237] <... prctl resumed>) = 0 [pid 6236] <... prctl resumed>) = 0 [pid 6235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6234] write(3, "1000", 4 [pid 6233] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6236] setpgid(0, 0 [pid 6234] <... write resumed>) = 4 [pid 6237] setpgid(0, 0 [pid 6236] <... setpgid resumed>) = 0 [pid 6235] <... openat resumed>) = 3 [pid 6233] <... bpf resumed>) = 4 [pid 6234] close(3 [pid 6237] <... setpgid resumed>) = 0 [pid 6236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6235] write(3, "1000", 4 [pid 6234] <... close resumed>) = 0 [pid 6233] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6236] <... openat resumed>) = 3 [pid 6235] <... write resumed>) = 4 executing program [pid 6234] write(1, "executing program\n", 18 [pid 6233] <... socket resumed>) = 5 [pid 6237] <... openat resumed>) = 3 [pid 6236] write(3, "1000", 4 [pid 6235] close(3 [pid 6234] <... write resumed>) = 18 [pid 6233] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6237] write(3, "1000", 4 [pid 6236] <... write resumed>) = 4 [pid 6235] <... close resumed>) = 0 [pid 6234] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6233] <... openat resumed>) = 6 [pid 6237] <... write resumed>) = 4 [pid 6236] close(3executing program [pid 6235] write(1, "executing program\n", 18 [pid 6234] <... bpf resumed>) = 3 [pid 6237] close(3 [pid 6236] <... close resumed>) = 0 [pid 6235] <... write resumed>) = 18 [pid 6233] write(6, "3", 1 [pid 6237] <... close resumed>) = 0 executing program [pid 6236] write(1, "executing program\n", 18 [pid 6234] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6233] <... write resumed>) = 1 executing program [pid 6237] write(1, "executing program\n", 18 [pid 6236] <... write resumed>) = 18 [pid 6235] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6233] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6237] <... write resumed>) = 18 [pid 6236] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6235] <... bpf resumed>) = 3 [pid 6234] <... bpf resumed>) = 4 [pid 6233] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6233] exit_group(0 [pid 6237] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6236] <... bpf resumed>) = 3 [pid 6235] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6234] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6233] <... exit_group resumed>) = ? [pid 6237] <... bpf resumed>) = 3 [pid 6235] <... bpf resumed>) = 4 [pid 6234] <... socket resumed>) = 5 [pid 6236] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6235] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6236] <... bpf resumed>) = 4 [pid 6235] <... socket resumed>) = 5 [pid 6237] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6236] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6235] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6234] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6233] +++ exited with 0 +++ [pid 6236] <... socket resumed>) = 5 [pid 6235] <... openat resumed>) = 6 [pid 6234] <... openat resumed>) = 6 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6233, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6237] <... bpf resumed>) = 4 [pid 6236] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6235] write(6, "3", 1 [pid 6236] <... openat resumed>) = 6 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6236] write(6, "3", 1 [pid 6235] <... write resumed>) = 1 [pid 6234] write(6, "3", 1 [pid 6237] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6236] <... write resumed>) = 1 [pid 6235] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6237] <... socket resumed>) = 5 [pid 6236] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6235] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6234] <... write resumed>) = 1 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6236] <... sendmsg resumed>) = 28 [pid 6235] exit_group(0 [pid 6237] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6236] exit_group(0 [pid 6235] <... exit_group resumed>) = ? [pid 6234] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6237] <... openat resumed>) = 6 [pid 6236] <... exit_group resumed>) = ? [pid 6234] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6237] write(6, "3", 1 [pid 6234] exit_group(0 [pid 6237] <... write resumed>) = 1 [pid 6235] +++ exited with 0 +++ [pid 6234] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 6238 attached [pid 6237] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6236] +++ exited with 0 +++ [pid 6238] set_robust_list(0x555556b47660, 24 [pid 6237] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6235, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6238] <... set_robust_list resumed>) = 0 [pid 6237] exit_group(0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6238 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6236, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6238] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6237] <... exit_group resumed>) = ? [pid 6234] +++ exited with 0 +++ [pid 6238] <... prctl resumed>) = 0 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6238] setpgid(0, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6234, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6238] <... setpgid resumed>) = 0 [pid 6238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6237] +++ exited with 0 +++ [pid 5852] <... restart_syscall resumed>) = 0 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 5846] <... restart_syscall resumed>) = 0 [pid 6238] <... openat resumed>) = 3 [pid 6238] write(3, "1000", 4 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6237, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6238] <... write resumed>) = 4 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6239 attached [pid 6238] close(3 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6239] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6239 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6240 attached [pid 6239] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 6241 attached [pid 6239] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6238] <... close resumed>) = 0 [pid 6239] <... prctl resumed>) = 0 [pid 6240] set_robust_list(0x555556b47660, 24 [pid 6239] setpgid(0, 0 [pid 6240] <... set_robust_list resumed>) = 0 [pid 6239] <... setpgid resumed>) = 0 [pid 6240] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6240] <... prctl resumed>) = 0 [pid 6240] setpgid(0, 0 [pid 6239] <... openat resumed>) = 3 [pid 6240] <... setpgid resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6240 ./strace-static-x86_64: Process 6242 attached executing program [pid 6238] write(1, "executing program\n", 18 [pid 6241] set_robust_list(0x555556b47660, 24 [pid 6240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6239] write(3, "1000", 4 [pid 6238] <... write resumed>) = 18 [pid 6242] set_robust_list(0x555556b47660, 24 [pid 6241] <... set_robust_list resumed>) = 0 [pid 6239] <... write resumed>) = 4 [pid 6240] <... openat resumed>) = 3 [pid 6239] close(3 [pid 6238] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6242] <... set_robust_list resumed>) = 0 [pid 6241] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6240] write(3, "1000", 4 [pid 6239] <... close resumed>) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6241 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6242 [pid 6241] <... prctl resumed>) = 0 [pid 6242] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6241] setpgid(0, 0 [pid 6240] <... write resumed>) = 4 [pid 6241] <... setpgid resumed>) = 0 [pid 6239] write(1, "executing program\n", 18 [pid 6242] <... prctl resumed>) = 0 executing program [pid 6242] setpgid(0, 0 [pid 6241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6239] <... write resumed>) = 18 [pid 6242] <... setpgid resumed>) = 0 [pid 6240] close(3) = 0 [pid 6239] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 executing program [pid 6242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6240] write(1, "executing program\n", 18) = 18 [pid 6238] <... bpf resumed>) = 3 [pid 6241] <... openat resumed>) = 3 [pid 6240] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6240] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6242] <... openat resumed>) = 3 [pid 6241] write(3, "1000", 4 [pid 6239] <... bpf resumed>) = 3 [pid 6238] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6242] write(3, "1000", 4 [pid 6241] <... write resumed>) = 4 [pid 6240] <... bpf resumed>) = 4 [pid 6239] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6242] <... write resumed>) = 4 [pid 6241] close(3 [pid 6240] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6239] <... bpf resumed>) = 4 [pid 6238] <... bpf resumed>) = 4 [pid 6242] close(3 [pid 6241] <... close resumed>) = 0 [pid 6240] <... socket resumed>) = 5 [pid 6239] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6242] <... close resumed>) = 0 [pid 6241] write(1, "executing program\n", 18 [pid 6240] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWRexecuting program [pid 6239] <... socket resumed>) = 5 [pid 6238] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6242] write(1, "executing program\n", 18 [pid 6241] <... write resumed>) = 18 [pid 6240] <... openat resumed>) = 6 [pid 6239] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR executing program [pid 6241] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6238] <... socket resumed>) = 5 [pid 6240] write(6, "3", 1 [pid 6242] <... write resumed>) = 18 [pid 6239] <... openat resumed>) = 6 [pid 6242] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6241] <... bpf resumed>) = 3 [pid 6240] <... write resumed>) = 1 [pid 6239] write(6, "3", 1 [pid 6238] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6240] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6239] <... write resumed>) = 1 [pid 6240] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6239] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6238] <... openat resumed>) = 6 [pid 6240] exit_group(0 [pid 6239] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6238] write(6, "3", 1 [pid 6241] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6240] <... exit_group resumed>) = ? [pid 6238] <... write resumed>) = 1 [pid 6239] exit_group(0 [pid 6241] <... bpf resumed>) = 4 [pid 6239] <... exit_group resumed>) = ? [pid 6238] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6241] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6240] +++ exited with 0 +++ [pid 6238] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6241] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6238] exit_group(0 [pid 6241] <... openat resumed>) = 6 [pid 6239] +++ exited with 0 +++ [pid 6238] <... exit_group resumed>) = ? [pid 6242] <... bpf resumed>) = 3 [pid 6241] write(6, "3", 1 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6239, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6240, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6242] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6241] <... write resumed>) = 1 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6242] <... bpf resumed>) = 4 [pid 6241] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6238] +++ exited with 0 +++ ./strace-static-x86_64: Process 6243 attached [pid 6242] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6241] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6238, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6243] set_robust_list(0x555556b47660, 24 [pid 6242] <... socket resumed>) = 5 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6243] <... set_robust_list resumed>) = 0 [pid 6242] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6241] exit_group(0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6243 [pid 6243] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6242] <... openat resumed>) = 6 [pid 6243] <... prctl resumed>) = 0 [pid 6242] write(6, "3", 1 [pid 6243] setpgid(0, 0) = 0 [pid 6242] <... write resumed>) = 1 [pid 6243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6242] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6241] <... exit_group resumed>) = ? [pid 6243] <... openat resumed>) = 3 [pid 6242] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6243] write(3, "1000", 4 [pid 6242] exit_group(0 [pid 6243] <... write resumed>) = 4 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6243] close(3 [pid 6242] <... exit_group resumed>) = ? [pid 6243] <... close resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program ./strace-static-x86_64: Process 6244 attached [pid 6241] +++ exited with 0 +++ [pid 6243] write(1, "executing program\n", 18 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6244 [pid 6243] <... write resumed>) = 18 [pid 6243] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6244] set_robust_list(0x555556b47660, 24 [pid 6243] <... bpf resumed>) = 3 [pid 6242] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6241, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6244] <... set_robust_list resumed>) = 0 [pid 6243] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6242, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6245 attached [pid 6244] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6243] <... bpf resumed>) = 4 ./strace-static-x86_64: Process 6246 attached [pid 6244] <... prctl resumed>) = 0 [pid 6243] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6243] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6246] set_robust_list(0x555556b47660, 24 [pid 6245] set_robust_list(0x555556b47660, 24 [pid 6244] setpgid(0, 0 [pid 6243] <... openat resumed>) = 6 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6246 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6245 [pid 6246] <... set_robust_list resumed>) = 0 [pid 6245] <... set_robust_list resumed>) = 0 [pid 6244] <... setpgid resumed>) = 0 [pid 6246] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6245] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6243] write(6, "3", 1 [pid 6244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6243] <... write resumed>) = 1 [pid 6243] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6246] <... prctl resumed>) = 0 [pid 6245] <... prctl resumed>) = 0 [pid 6244] <... openat resumed>) = 3 [pid 6243] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6246] setpgid(0, 0 [pid 6245] setpgid(0, 0 [pid 6243] exit_group(0 [pid 6246] <... setpgid resumed>) = 0 [pid 6245] <... setpgid resumed>) = 0 [pid 6244] write(3, "1000", 4 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6244] <... write resumed>) = 4 [pid 6243] <... exit_group resumed>) = ? [pid 6246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6245] <... openat resumed>) = 3 [pid 6244] close(3 [pid 6243] +++ exited with 0 +++ [pid 6244] <... close resumed>) = 0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6243, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6246] <... openat resumed>) = 3 [pid 6245] write(3, "1000", 4 [pid 6244] write(1, "executing program\n", 18 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6246] write(3, "1000", 4 [pid 6245] <... write resumed>) = 4 [pid 5845] <... restart_syscall resumed>) = 0 executing program [pid 6244] <... write resumed>) = 18 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6246] <... write resumed>) = 4 [pid 6245] close(3 [pid 6244] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6246] close(3 [pid 6245] <... close resumed>) = 0 [pid 6246] <... close resumed>) = 0 [pid 6245] write(1, "executing program\n", 18./strace-static-x86_64: Process 6248 attached ./strace-static-x86_64: Process 6247 attached [pid 6248] set_robust_list(0x555556b47660, 24 [pid 6247] set_robust_list(0x555556b47660, 24 [pid 6248] <... set_robust_list resumed>) = 0 [pid 6248] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6247] <... set_robust_list resumed>) = 0 executing program [pid 6244] <... bpf resumed>) = 3 [pid 6248] <... prctl resumed>) = 0 [pid 6247] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6248 [pid 6248] setpgid(0, 0) = 0 [pid 6248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6247] <... prctl resumed>) = 0 [pid 6246] write(1, "executing program\n", 18 [pid 6245] <... write resumed>) = 18 [pid 6244] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24executing program [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6247 [pid 6248] <... openat resumed>) = 3 [pid 6247] setpgid(0, 0 [pid 6246] <... write resumed>) = 18 [pid 6245] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6248] write(3, "1000", 4 [pid 6247] <... setpgid resumed>) = 0 [pid 6246] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6244] <... bpf resumed>) = 4 [pid 6247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6248] <... write resumed>) = 4 [pid 6247] <... openat resumed>) = 3 [pid 6246] <... bpf resumed>) = 3 [pid 6245] <... bpf resumed>) = 3 [pid 6244] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6248] close(3 [pid 6247] write(3, "1000", 4 [pid 6248] <... close resumed>) = 0 [pid 6246] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6244] <... socket resumed>) = 5 [pid 6248] write(1, "executing program\n", 18 [pid 6247] <... write resumed>) = 4 executing program [pid 6245] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6248] <... write resumed>) = 18 [pid 6247] close(3 [pid 6246] <... bpf resumed>) = 4 [pid 6244] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6248] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6247] <... close resumed>) = 0 [pid 6245] <... bpf resumed>) = 4 [pid 6247] write(1, "executing program\n", 18 [pid 6246] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERICexecuting program [pid 6245] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6244] <... openat resumed>) = 6 [pid 6248] <... bpf resumed>) = 3 [pid 6247] <... write resumed>) = 18 [pid 6246] <... socket resumed>) = 5 [pid 6245] <... socket resumed>) = 5 [pid 6248] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6247] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6245] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6244] write(6, "3", 1 [pid 6248] <... bpf resumed>) = 4 [pid 6246] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6245] <... openat resumed>) = 6 [pid 6246] <... openat resumed>) = 6 [pid 6245] write(6, "3", 1) = 1 [pid 6245] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6245] exit_group(0) = ? [pid 6245] +++ exited with 0 +++ [pid 6248] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6246] write(6, "3", 1 [pid 6244] <... write resumed>) = 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6245, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6248] <... socket resumed>) = 5 [pid 6247] <... bpf resumed>) = 3 [pid 6246] <... write resumed>) = 1 [pid 6244] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6248] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6247] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6246] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6248] <... openat resumed>) = 6 [pid 6244] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6248] write(6, "3", 1 [pid 6247] <... bpf resumed>) = 4 [pid 6246] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6247] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6244] exit_group(0 [pid 6248] <... write resumed>) = 1 [pid 6248] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6247] <... socket resumed>) = 5 [pid 6246] exit_group(0 [pid 6244] <... exit_group resumed>) = ? [pid 6248] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6247] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6246] <... exit_group resumed>) = ? [pid 6248] exit_group(0) = ? [pid 6248] +++ exited with 0 +++ [pid 6247] <... openat resumed>) = 6 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6248, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6247] write(6, "3", 1 [pid 6246] +++ exited with 0 +++ [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6247] <... write resumed>) = 1 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6246, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6247] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 6249 attached ) = 28 [pid 6244] +++ exited with 0 +++ [pid 6249] set_robust_list(0x555556b47660, 24 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6249 [pid 6247] exit_group(0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6244, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6247] <... exit_group resumed>) = ? [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6249] <... set_robust_list resumed>) = 0 [pid 6249] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5852] <... restart_syscall resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6249] <... prctl resumed>) = 0 [pid 6247] +++ exited with 0 +++ ./strace-static-x86_64: Process 6250 attached [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6247, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6250] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6250 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5845] <... restart_syscall resumed>) = 0 [pid 6250] <... set_robust_list resumed>) = 0 [pid 6249] setpgid(0, 0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6249] <... setpgid resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6250] setpgid(0, 0 [pid 6249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6250] <... setpgid resumed>) = 0 [pid 6250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6251 attached ) = 3 [pid 6251] set_robust_list(0x555556b47660, 24./strace-static-x86_64: Process 6252 attached [pid 6250] write(3, "1000", 4 [pid 6249] <... openat resumed>) = 3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6251 [pid 6252] set_robust_list(0x555556b47660, 24 [pid 6251] <... set_robust_list resumed>) = 0 [pid 6250] <... write resumed>) = 4 [pid 6249] write(3, "1000", 4 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6252 [pid 6252] <... set_robust_list resumed>) = 0 [pid 6251] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6250] close(3 [pid 6249] <... write resumed>) = 4 [pid 6252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 6253 attached [pid 6251] <... prctl resumed>) = 0 [pid 6250] <... close resumed>) = 0 [pid 6249] close(3 [pid 6253] set_robust_list(0x555556b47660, 24 [pid 6252] setpgid(0, 0 [pid 6251] setpgid(0, 0 executing program [pid 6250] write(1, "executing program\n", 18 [pid 6249] <... close resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6253 [pid 6253] <... set_robust_list resumed>) = 0 [pid 6252] <... setpgid resumed>) = 0 [pid 6251] <... setpgid resumed>) = 0 executing program [pid 6250] <... write resumed>) = 18 [pid 6253] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6249] write(1, "executing program\n", 18 [pid 6250] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6249] <... write resumed>) = 18 [pid 6251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6253] <... prctl resumed>) = 0 [pid 6252] <... openat resumed>) = 3 [pid 6249] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6253] setpgid(0, 0 [pid 6251] <... openat resumed>) = 3 [pid 6250] <... bpf resumed>) = 3 [pid 6251] write(3, "1000", 4 [pid 6253] <... setpgid resumed>) = 0 [pid 6252] write(3, "1000", 4 [pid 6251] <... write resumed>) = 4 [pid 6253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6252] <... write resumed>) = 4 [pid 6251] close(3executing program [pid 6252] close(3 [pid 6251] <... close resumed>) = 0 [pid 6253] <... openat resumed>) = 3 [pid 6252] <... close resumed>) = 0 [pid 6251] write(1, "executing program\n", 18executing program [pid 6253] write(3, "1000", 4 [pid 6252] write(1, "executing program\n", 18 [pid 6251] <... write resumed>) = 18 [pid 6250] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6253] <... write resumed>) = 4 [pid 6252] <... write resumed>) = 18 [pid 6251] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6250] <... bpf resumed>) = 4 [pid 6253] close(3 [pid 6252] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6249] <... bpf resumed>) = 3 [pid 6253] <... close resumed>) = 0 [pid 6252] <... bpf resumed>) = 3 [pid 6251] <... bpf resumed>) = 3 [pid 6250] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6253] write(1, "executing program\n", 18 [pid 6252] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6249] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6253] <... write resumed>) = 18 [pid 6250] <... socket resumed>) = 5 [pid 6253] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6251] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6250] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6252] <... bpf resumed>) = 4 [pid 6251] <... bpf resumed>) = 4 [pid 6250] <... openat resumed>) = 6 [pid 6251] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERICexecuting program [pid 6250] write(6, "3", 1 [pid 6253] <... bpf resumed>) = 3 [pid 6251] <... socket resumed>) = 5 [pid 6251] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6250] <... write resumed>) = 1 [pid 6249] <... bpf resumed>) = 4 [pid 6253] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6252] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6251] <... openat resumed>) = 6 [pid 6250] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6249] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6253] <... bpf resumed>) = 4 [pid 6252] <... socket resumed>) = 5 [pid 6251] write(6, "3", 1 [pid 6250] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6253] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6252] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6251] <... write resumed>) = 1 [pid 6250] exit_group(0 [pid 6249] <... socket resumed>) = 5 [pid 6253] <... socket resumed>) = 5 [pid 6252] <... openat resumed>) = 6 [pid 6251] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6250] <... exit_group resumed>) = ? [pid 6253] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6252] write(6, "3", 1 [pid 6251] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6249] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6253] <... openat resumed>) = 6 [pid 6252] <... write resumed>) = 1 [pid 6251] exit_group(0 [pid 6253] write(6, "3", 1 [pid 6252] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6249] <... openat resumed>) = 6 [pid 6253] <... write resumed>) = 1 [pid 6252] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6251] <... exit_group resumed>) = ? [pid 6253] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6249] write(6, "3", 1 [pid 6253] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6252] exit_group(0 [pid 6251] +++ exited with 0 +++ [pid 6250] +++ exited with 0 +++ [pid 6253] exit_group(0 [pid 6252] <... exit_group resumed>) = ? [pid 6249] <... write resumed>) = 1 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6250, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6251, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6253] <... exit_group resumed>) = ? [pid 6249] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6252] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6252, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6249] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6249] exit_group(0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6249] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 6255 attached ./strace-static-x86_64: Process 6254 attached [pid 6253] +++ exited with 0 +++ [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6253, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6255] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6254 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6255 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6255] <... set_robust_list resumed>) = 0 [pid 6254] set_robust_list(0x555556b47660, 24 [pid 6255] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6254] <... set_robust_list resumed>) = 0 [pid 6254] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6255] <... prctl resumed>) = 0 [pid 6254] <... prctl resumed>) = 0 [pid 6255] setpgid(0, 0 [pid 6249] +++ exited with 0 +++ [pid 6255] <... setpgid resumed>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6249, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6254] setpgid(0, 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6255] <... openat resumed>) = 3 [pid 6254] <... setpgid resumed>) = 0 [pid 6255] write(3, "1000", 4 [pid 6254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6255] <... write resumed>) = 4 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6256 attached [pid 6255] close(3 [pid 6254] <... openat resumed>) = 3 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6256] set_robust_list(0x555556b47660, 24 [pid 6255] <... close resumed>) = 0 [pid 6254] write(3, "1000", 4 [pid 6256] <... set_robust_list resumed>) = 0 [pid 6255] write(1, "executing program\n", 18 [pid 6254] <... write resumed>) = 4 executing program [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6256 [pid 6256] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6255] <... write resumed>) = 18 [pid 6254] close(3 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6256] <... prctl resumed>) = 0 [pid 6254] <... close resumed>) = 0 [pid 6254] write(1, "executing program\n", 18executing program [pid 6255] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6258 attached ./strace-static-x86_64: Process 6257 attached [pid 6256] setpgid(0, 0 [pid 6254] <... write resumed>) = 18 [pid 6256] <... setpgid resumed>) = 0 [pid 6256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6254] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6258 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6257 [pid 6258] set_robust_list(0x555556b47660, 24 [pid 6257] set_robust_list(0x555556b47660, 24 [pid 6256] <... openat resumed>) = 3 [pid 6257] <... set_robust_list resumed>) = 0 [pid 6254] <... bpf resumed>) = 3 [pid 6255] <... bpf resumed>) = 3 [pid 6257] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6258] <... set_robust_list resumed>) = 0 [pid 6256] write(3, "1000", 4 [pid 6257] <... prctl resumed>) = 0 [pid 6256] <... write resumed>) = 4 [pid 6255] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6257] setpgid(0, 0 [pid 6256] close(3 [pid 6257] <... setpgid resumed>) = 0 [pid 6258] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6256] <... close resumed>) = 0 [pid 6255] <... bpf resumed>) = 4 [pid 6254] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6258] <... prctl resumed>) = 0 [pid 6257] <... openat resumed>) = 3 [pid 6256] write(1, "executing program\n", 18executing program [pid 6258] setpgid(0, 0 [pid 6256] <... write resumed>) = 18 [pid 6255] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6258] <... setpgid resumed>) = 0 [pid 6257] write(3, "1000", 4 [pid 6256] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6254] <... bpf resumed>) = 4 [pid 6258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6257] <... write resumed>) = 4 [pid 6255] <... socket resumed>) = 5 [pid 6256] <... bpf resumed>) = 3 [pid 6257] close(3 [pid 6255] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6254] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6258] <... openat resumed>) = 3 [pid 6257] <... close resumed>) = 0 [pid 6258] write(3, "1000", 4 [pid 6257] write(1, "executing program\n", 18executing program [pid 6258] <... write resumed>) = 4 [pid 6257] <... write resumed>) = 18 [pid 6256] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6255] <... openat resumed>) = 6 [pid 6254] <... socket resumed>) = 5 [pid 6258] close(3 [pid 6257] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6256] <... bpf resumed>) = 4 [pid 6255] write(6, "3", 1 [pid 6254] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6258] <... close resumed>) = 0 [pid 6256] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6255] <... write resumed>) = 1 [pid 6257] <... bpf resumed>) = 3 [pid 6254] <... openat resumed>) = 6 executing program [pid 6258] write(1, "executing program\n", 18 [pid 6256] <... socket resumed>) = 5 [pid 6255] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6254] write(6, "3", 1 [pid 6258] <... write resumed>) = 18 [pid 6257] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6256] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6255] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6254] <... write resumed>) = 1 [pid 6258] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6256] <... openat resumed>) = 6 [pid 6255] exit_group(0 [pid 6254] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6257] <... bpf resumed>) = 4 [pid 6255] <... exit_group resumed>) = ? [pid 6258] <... bpf resumed>) = 3 [pid 6257] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6256] write(6, "3", 1 [pid 6255] +++ exited with 0 +++ [pid 6254] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6258] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6257] <... socket resumed>) = 5 [pid 6256] <... write resumed>) = 1 [pid 6254] exit_group(0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6255, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6258] <... bpf resumed>) = 4 [pid 6257] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6256] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6254] <... exit_group resumed>) = ? [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6258] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6257] <... openat resumed>) = 6 [pid 6256] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] <... restart_syscall resumed>) = 0 [pid 6258] <... socket resumed>) = 5 [pid 6257] write(6, "3", 1 [pid 6256] exit_group(0 [pid 6254] +++ exited with 0 +++ [pid 6258] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6257] <... write resumed>) = 1 [pid 6258] <... openat resumed>) = 6 [pid 6256] <... exit_group resumed>) = ? [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6254, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6259 attached [pid 6258] write(6, "3", 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6259] set_robust_list(0x555556b47660, 24 [pid 6258] <... write resumed>) = 1 [pid 6257] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6256] +++ exited with 0 +++ [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6259 ./strace-static-x86_64: Process 6260 attached [pid 6259] <... set_robust_list resumed>) = 0 [pid 6258] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6257] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6256, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6260] set_robust_list(0x555556b47660, 24 [pid 6259] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6258] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6257] exit_group(0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6260 [pid 6260] <... set_robust_list resumed>) = 0 [pid 6259] <... prctl resumed>) = 0 [pid 6258] exit_group(0 [pid 6257] <... exit_group resumed>) = ? [pid 6260] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6259] setpgid(0, 0 [pid 6258] <... exit_group resumed>) = ? [pid 6260] <... prctl resumed>) = 0 [pid 6260] setpgid(0, 0 [pid 6259] <... setpgid resumed>) = 0 [pid 6259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6260] <... setpgid resumed>) = 0 [pid 6259] <... openat resumed>) = 3 [pid 6257] +++ exited with 0 +++ [pid 6260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6259] write(3, "1000", 4 [pid 6260] <... openat resumed>) = 3 [pid 6259] <... write resumed>) = 4 [pid 6258] +++ exited with 0 +++ [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6257, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6260] write(3, "1000", 4 [pid 6259] close(3 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6261 attached [pid 6260] <... write resumed>) = 4 [pid 6259] <... close resumed>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6258, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6260] close(3 [pid 6259] write(1, "executing program\n", 18 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6261 [pid 6261] set_robust_list(0x555556b47660, 24 [pid 6260] <... close resumed>) = 0 [pid 6259] <... write resumed>) = 18 executing program executing program [pid 6261] <... set_robust_list resumed>) = 0 [pid 6260] write(1, "executing program\n", 18 [pid 6259] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6261] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6260] <... write resumed>) = 18 [pid 6259] <... bpf resumed>) = 3 [pid 6261] <... prctl resumed>) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6261] setpgid(0, 0 [pid 6260] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148./strace-static-x86_64: Process 6262 attached [pid 6261] <... setpgid resumed>) = 0 [pid 6259] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6262] set_robust_list(0x555556b47660, 24) = 0 [pid 6262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6262] setpgid(0, 0 [pid 6261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6260] <... bpf resumed>) = 3 [pid 6259] <... bpf resumed>) = 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6262 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6262] <... setpgid resumed>) = 0 [pid 6260] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6259] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 6263 attached [pid 6262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6260] <... bpf resumed>) = 4 [pid 6259] <... socket resumed>) = 5 [pid 6262] <... openat resumed>) = 3 [pid 6261] <... openat resumed>) = 3 [pid 6262] write(3, "1000", 4 [pid 6260] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6259] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6262] <... write resumed>) = 4 [pid 6260] <... socket resumed>) = 5 [pid 6259] <... openat resumed>) = 6 [pid 6263] set_robust_list(0x555556b47660, 24 [pid 6261] write(3, "1000", 4 [pid 6263] <... set_robust_list resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6263 [pid 6263] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6262] close(3 [pid 6261] <... write resumed>) = 4 [pid 6260] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6259] write(6, "3", 1 [pid 6263] <... prctl resumed>) = 0 [pid 6262] <... close resumed>) = 0 [pid 6261] close(3 [pid 6260] <... openat resumed>) = 6 [pid 6259] <... write resumed>) = 1 [pid 6263] setpgid(0, 0 [pid 6262] write(1, "executing program\n", 18executing program [pid 6261] <... close resumed>) = 0 [pid 6260] write(6, "3", 1 [pid 6259] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6263] <... setpgid resumed>) = 0 [pid 6262] <... write resumed>) = 18 executing program [pid 6261] write(1, "executing program\n", 18 [pid 6260] <... write resumed>) = 1 [pid 6259] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6262] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6261] <... write resumed>) = 18 [pid 6260] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6259] exit_group(0 [pid 6263] <... openat resumed>) = 3 [pid 6262] <... bpf resumed>) = 3 [pid 6261] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6260] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6259] <... exit_group resumed>) = ? [pid 6263] write(3, "1000", 4 [pid 6262] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6261] <... bpf resumed>) = 3 [pid 6260] exit_group(0 [pid 6263] <... write resumed>) = 4 [pid 6260] <... exit_group resumed>) = ? [pid 6263] close(3 [pid 6262] <... bpf resumed>) = 4 [pid 6261] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6263] <... close resumed>) = 0 [pid 6262] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6263] write(1, "executing program\n", 18executing program [pid 6261] <... bpf resumed>) = 4 [pid 6263] <... write resumed>) = 18 [pid 6262] <... socket resumed>) = 5 [pid 6259] +++ exited with 0 +++ [pid 6261] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6263] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6262] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6260] +++ exited with 0 +++ [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6259, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6261] <... socket resumed>) = 5 [pid 6262] <... openat resumed>) = 6 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6260, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6263] <... bpf resumed>) = 3 [pid 6261] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6263] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6262] write(6, "3", 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6263] <... bpf resumed>) = 4 [pid 6262] <... write resumed>) = 1 [pid 6261] <... openat resumed>) = 6 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6263] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6262] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 6264 attached [pid 6263] <... socket resumed>) = 5 [pid 6262] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6261] write(6, "3", 1 [pid 6264] set_robust_list(0x555556b47660, 24 [pid 6263] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6262] exit_group(0 [pid 6261] <... write resumed>) = 1 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6264 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6263] <... openat resumed>) = 6 [pid 6262] <... exit_group resumed>) = ? [pid 6261] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0./strace-static-x86_64: Process 6265 attached [pid 6264] <... set_robust_list resumed>) = 0 [pid 6263] write(6, "3", 1 [pid 6261] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6265] set_robust_list(0x555556b47660, 24 [pid 6264] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6263] <... write resumed>) = 1 [pid 6262] +++ exited with 0 +++ [pid 6261] exit_group(0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6265 [pid 6265] <... set_robust_list resumed>) = 0 [pid 6264] <... prctl resumed>) = 0 [pid 6263] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6261] <... exit_group resumed>) = ? [pid 6265] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6264] setpgid(0, 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6262, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6265] <... prctl resumed>) = 0 [pid 6264] <... setpgid resumed>) = 0 [pid 6265] setpgid(0, 0 [pid 6264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6265] <... setpgid resumed>) = 0 [pid 6264] <... openat resumed>) = 3 [pid 6265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6263] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6265] <... openat resumed>) = 3 [pid 6264] write(3, "1000", 4 [pid 6265] write(3, "1000", 4 [pid 6264] <... write resumed>) = 4 [pid 6265] <... write resumed>) = 4 [pid 6264] close(3executing program executing program [pid 6263] exit_group(0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6265] close(3 [pid 6264] <... close resumed>) = 0 [pid 6263] <... exit_group resumed>) = ? [pid 6265] <... close resumed>) = 0 [pid 6264] write(1, "executing program\n", 18 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6265] write(1, "executing program\n", 18 [pid 6264] <... write resumed>) = 18 [pid 6265] <... write resumed>) = 18 [pid 6264] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6265] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6263] +++ exited with 0 +++ [pid 6261] +++ exited with 0 +++ ./strace-static-x86_64: Process 6266 attached [pid 6264] <... bpf resumed>) = 3 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6261, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6263, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6265] <... bpf resumed>) = 3 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6266] set_robust_list(0x555556b47660, 24 [pid 6264] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6265] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6266 [pid 6266] <... set_robust_list resumed>) = 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6266] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6264] <... bpf resumed>) = 4 [pid 6264] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6264] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6267 attached [pid 6266] <... prctl resumed>) = 0 [pid 6267] set_robust_list(0x555556b47660, 24 [pid 6266] setpgid(0, 0 [pid 6265] <... bpf resumed>) = 4 [pid 6267] <... set_robust_list resumed>) = 0 [pid 6266] <... setpgid resumed>) = 0 [pid 6265] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6267 [pid 6267] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6265] <... socket resumed>) = 5 [pid 6264] <... openat resumed>) = 6 [pid 6267] <... prctl resumed>) = 0 [pid 6266] <... openat resumed>) = 3 [pid 6265] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6267] setpgid(0, 0 [pid 6266] write(3, "1000", 4 [pid 6265] <... openat resumed>) = 6 [pid 6267] <... setpgid resumed>) = 0 [pid 6266] <... write resumed>) = 4 [pid 6264] write(6, "3", 1 [pid 6267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6266] close(3 [pid 6265] write(6, "3", 1 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6264] <... write resumed>) = 1 [pid 6267] <... openat resumed>) = 3 [pid 6266] <... close resumed>) = 0 [pid 6265] <... write resumed>) = 1 [pid 6267] write(3, "1000", 4 [pid 6266] write(1, "executing program\n", 18executing program [pid 6265] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6264] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6267] <... write resumed>) = 4 [pid 6266] <... write resumed>) = 18 [pid 6265] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6267] close(3 [pid 6266] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6265] exit_group(0 [pid 6264] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6267] <... close resumed>) = 0 [pid 6266] <... bpf resumed>) = 3 [pid 6265] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 6268 attached [pid 6267] write(1, "executing program\n", 18 [pid 6264] exit_group(0 [pid 6268] set_robust_list(0x555556b47660, 24 executing program [pid 6264] <... exit_group resumed>) = ? [pid 6268] <... set_robust_list resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6268 [pid 6267] <... write resumed>) = 18 [pid 6265] +++ exited with 0 +++ [pid 6266] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6267] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6265, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6268] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6267] <... bpf resumed>) = 3 [pid 6264] +++ exited with 0 +++ [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6268] <... prctl resumed>) = 0 [pid 6267] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6266] <... bpf resumed>) = 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6264, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 6268] setpgid(0, 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6268] <... setpgid resumed>) = 0 [pid 6267] <... bpf resumed>) = 4 [pid 6266] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6267] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6266] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] <... restart_syscall resumed>) = 0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6268] <... openat resumed>) = 3 [pid 6267] <... socket resumed>) = 5 [pid 6266] <... openat resumed>) = 6 [pid 6268] write(3, "1000", 4 [pid 6267] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6266] write(6, "3", 1 [pid 6268] <... write resumed>) = 4 [pid 6267] <... openat resumed>) = 6 [pid 6268] close(3 [pid 6267] write(6, "3", 1 [pid 6266] <... write resumed>) = 1 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6268] <... close resumed>) = 0 [pid 6267] <... write resumed>) = 1 executing program [pid 6266] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6268] write(1, "executing program\n", 18) = 18 ./strace-static-x86_64: Process 6270 attached ./strace-static-x86_64: Process 6269 attached [pid 6268] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6267] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6266] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6270] set_robust_list(0x555556b47660, 24 [pid 6269] set_robust_list(0x555556b47660, 24 [pid 6268] <... bpf resumed>) = 3 [pid 6267] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6269] <... set_robust_list resumed>) = 0 [pid 6268] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6267] exit_group(0 [pid 6266] exit_group(0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6270 [pid 6270] <... set_robust_list resumed>) = 0 [pid 6269] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6267] <... exit_group resumed>) = ? [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6269 [pid 6270] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6269] <... prctl resumed>) = 0 [pid 6268] <... bpf resumed>) = 4 [pid 6266] <... exit_group resumed>) = ? [pid 6270] <... prctl resumed>) = 0 [pid 6270] setpgid(0, 0 [pid 6269] setpgid(0, 0 [pid 6267] +++ exited with 0 +++ [pid 6270] <... setpgid resumed>) = 0 [pid 6269] <... setpgid resumed>) = 0 [pid 6268] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6268] <... socket resumed>) = 5 [pid 6270] <... openat resumed>) = 3 [pid 6268] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6267, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6270] write(3, "1000", 4 [pid 6269] <... openat resumed>) = 3 [pid 6268] <... openat resumed>) = 6 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6270] <... write resumed>) = 4 [pid 6269] write(3, "1000", 4 [pid 6268] write(6, "3", 1 [pid 6266] +++ exited with 0 +++ ./strace-static-x86_64: Process 6271 attached [pid 6270] close(3 [pid 6269] <... write resumed>) = 4 [pid 6268] <... write resumed>) = 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6266, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6271] set_robust_list(0x555556b47660, 24 [pid 6270] <... close resumed>) = 0 [pid 6269] close(3 [pid 6268] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6271] <... set_robust_list resumed>) = 0 [pid 6269] <... close resumed>) = 0 [pid 6268] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) executing program [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6271 [pid 6269] write(1, "executing program\n", 18 [pid 6271] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6270] write(1, "executing program\n", 18executing program [pid 6269] <... write resumed>) = 18 [pid 6268] exit_group(0 [pid 6271] <... prctl resumed>) = 0 [pid 6270] <... write resumed>) = 18 [pid 6271] setpgid(0, 0 [pid 6270] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6271] <... setpgid resumed>) = 0 [pid 6270] <... bpf resumed>) = 3 [pid 6269] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6268] <... exit_group resumed>) = ? [pid 6271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6271] write(3, "1000", 4executing program [pid 6270] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6271] <... write resumed>) = 4 [pid 6269] <... bpf resumed>) = 3 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6271] close(3) = 0 [pid 6271] write(1, "executing program\n", 18) = 18 [pid 6271] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6270] <... bpf resumed>) = 4 [pid 6269] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6268] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6268, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6270] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6271] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6270] <... socket resumed>) = 5 [pid 5845] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6272 attached [pid 6271] <... bpf resumed>) = 4 [pid 6270] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6269] <... bpf resumed>) = 4 [pid 6272] set_robust_list(0x555556b47660, 24 [pid 6269] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6272 [pid 6272] <... set_robust_list resumed>) = 0 [pid 6271] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6270] write(6, "3", 1 [pid 6269] <... socket resumed>) = 5 [pid 6272] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6271] <... socket resumed>) = 5 [pid 6270] <... write resumed>) = 1 [pid 6269] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6272] <... prctl resumed>) = 0 [pid 6271] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6270] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6272] setpgid(0, 0 [pid 6271] <... openat resumed>) = 6 [pid 6270] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6269] <... openat resumed>) = 6 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6272] <... setpgid resumed>) = 0 [pid 6271] write(6, "3", 1 [pid 6270] exit_group(0 [pid 6272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6271] <... write resumed>) = 1 [pid 6269] write(6, "3", 1 [pid 6271] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6270] <... exit_group resumed>) = ? [pid 6272] <... openat resumed>) = 3 [pid 6271] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6269] <... write resumed>) = 1 [pid 6272] write(3, "1000", 4 [pid 6271] exit_group(0 [pid 6270] +++ exited with 0 +++ [pid 6269] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6272] <... write resumed>) = 4 [pid 6271] <... exit_group resumed>) = ? [pid 6269] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6270, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6272] close(3executing program ./strace-static-x86_64: Process 6273 attached ) = 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6273] set_robust_list(0x555556b47660, 24 [pid 6272] write(1, "executing program\n", 18 [pid 5852] <... restart_syscall resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6273 [pid 6273] <... set_robust_list resumed>) = 0 [pid 6272] <... write resumed>) = 18 [pid 6269] exit_group(0 [pid 6273] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6272] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6269] <... exit_group resumed>) = ? [pid 6273] <... prctl resumed>) = 0 [pid 6271] +++ exited with 0 +++ [pid 6269] +++ exited with 0 +++ [pid 6273] setpgid(0, 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6271, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6273] <... setpgid resumed>) = 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6269, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6272] <... bpf resumed>) = 3 [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6273] <... openat resumed>) = 3 [pid 6272] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] <... restart_syscall resumed>) = 0 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6273] write(3, "1000", 4) = 4 [pid 6272] <... bpf resumed>) = 4 [pid 6273] close(3./strace-static-x86_64: Process 6274 attached ) = 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6274 [pid 6272] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6274] set_robust_list(0x555556b47660, 24 [pid 6273] write(1, "executing program\n", 18 [pid 6272] <... socket resumed>) = 5 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6274] <... set_robust_list resumed>) = 0 executing program ./strace-static-x86_64: Process 6275 attached ./strace-static-x86_64: Process 6276 attached [pid 6273] <... write resumed>) = 18 [pid 6272] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6276] set_robust_list(0x555556b47660, 24 [pid 6274] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6273] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6272] <... openat resumed>) = 6 [pid 6275] set_robust_list(0x555556b47660, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6275 [pid 6276] <... set_robust_list resumed>) = 0 [pid 6275] <... set_robust_list resumed>) = 0 [pid 6274] <... prctl resumed>) = 0 [pid 6272] write(6, "3", 1 [pid 6275] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6274] setpgid(0, 0 [pid 6273] <... bpf resumed>) = 3 [pid 6272] <... write resumed>) = 1 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6276 [pid 6276] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6274] <... setpgid resumed>) = 0 [pid 6272] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6276] <... prctl resumed>) = 0 [pid 6273] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6272] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6276] setpgid(0, 0) = 0 [pid 6275] <... prctl resumed>) = 0 [pid 6272] exit_group(0 [pid 6275] setpgid(0, 0 [pid 6276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6273] <... bpf resumed>) = 4 [pid 6272] <... exit_group resumed>) = ? [pid 6275] <... setpgid resumed>) = 0 [pid 6274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6276] <... openat resumed>) = 3 [pid 6275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6275] write(3, "1000", 4) = 4 [pid 6276] write(3, "1000", 4 [pid 6275] close(3executing program ) = 0 [pid 6275] write(1, "executing program\n", 18) = 18 [pid 6275] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6276] <... write resumed>) = 4 [pid 6274] <... openat resumed>) = 3 [pid 6273] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6272] +++ exited with 0 +++ [pid 6276] close(3executing program ) = 0 [pid 6276] write(1, "executing program\n", 18 [pid 6275] <... bpf resumed>) = 3 [pid 6276] <... write resumed>) = 18 [pid 6276] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6274] write(3, "1000", 4 [pid 6273] <... socket resumed>) = 5 [pid 6275] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6272, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6276] <... bpf resumed>) = 3 [pid 6274] <... write resumed>) = 4 [pid 6273] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6276] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6273] <... openat resumed>) = 6 [pid 6276] <... bpf resumed>) = 4 [pid 6275] <... bpf resumed>) = 4 [pid 6274] close(3 [pid 6276] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6273] write(6, "3", 1 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6275] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6274] <... close resumed>) = 0 [pid 6273] <... write resumed>) = 1 [pid 6276] <... socket resumed>) = 5 [pid 6276] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6275] <... socket resumed>) = 5 executing program [pid 6274] write(1, "executing program\n", 18 [pid 6273] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6276] <... openat resumed>) = 6 [pid 6275] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6274] <... write resumed>) = 18 [pid 6273] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) ./strace-static-x86_64: Process 6277 attached [pid 6276] write(6, "3", 1 [pid 6275] <... openat resumed>) = 6 [pid 6274] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6273] exit_group(0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6277 [pid 6277] set_robust_list(0x555556b47660, 24 [pid 6276] <... write resumed>) = 1 [pid 6275] write(6, "3", 1 [pid 6277] <... set_robust_list resumed>) = 0 [pid 6276] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6275] <... write resumed>) = 1 [pid 6274] <... bpf resumed>) = 3 [pid 6273] <... exit_group resumed>) = ? [pid 6277] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6276] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6275] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6277] <... prctl resumed>) = 0 [pid 6274] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6277] setpgid(0, 0 [pid 6276] exit_group(0 [pid 6275] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6277] <... setpgid resumed>) = 0 [pid 6276] <... exit_group resumed>) = ? [pid 6274] <... bpf resumed>) = 4 [pid 6277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6275] exit_group(0 [pid 6274] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6276] +++ exited with 0 +++ [pid 6277] <... openat resumed>) = 3 [pid 6275] <... exit_group resumed>) = ? [pid 6274] <... socket resumed>) = 5 [pid 6273] +++ exited with 0 +++ [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6276, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6277] write(3, "1000", 4 [pid 6274] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6273, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 6277] <... write resumed>) = 4 [pid 6274] <... openat resumed>) = 6 [pid 5845] restart_syscall(<... resuming interrupted clone ...>executing program [pid 6277] close(3 [pid 6275] +++ exited with 0 +++ [pid 6274] write(6, "3", 1 [pid 6277] <... close resumed>) = 0 [pid 6274] <... write resumed>) = 1 [pid 6277] write(1, "executing program\n", 18 [pid 6274] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6275, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6277] <... write resumed>) = 18 [pid 6274] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6277] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6274] exit_group(0 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6277] <... bpf resumed>) = 3 [pid 5846] <... restart_syscall resumed>) = 0 [pid 5845] <... restart_syscall resumed>) = 0 [pid 6277] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6274] <... exit_group resumed>) = ? [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6278 attached [pid 6277] <... bpf resumed>) = 4 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6279 attached [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6278 ./strace-static-x86_64: Process 6280 attached [pid 6278] set_robust_list(0x555556b47660, 24 [pid 6277] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6280] set_robust_list(0x555556b47660, 24 [pid 6279] set_robust_list(0x555556b47660, 24 [pid 6278] <... set_robust_list resumed>) = 0 [pid 6277] <... socket resumed>) = 5 [pid 6274] +++ exited with 0 +++ [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6279 [pid 6280] <... set_robust_list resumed>) = 0 [pid 6279] <... set_robust_list resumed>) = 0 [pid 6278] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6277] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6274, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6280 [pid 6280] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6279] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6278] <... prctl resumed>) = 0 [pid 6277] <... openat resumed>) = 6 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 6280] <... prctl resumed>) = 0 [pid 6279] <... prctl resumed>) = 0 [pid 6278] setpgid(0, 0 [pid 6277] write(6, "3", 1 [pid 6280] setpgid(0, 0 [pid 6278] <... setpgid resumed>) = 0 [pid 6277] <... write resumed>) = 1 [pid 6280] <... setpgid resumed>) = 0 [pid 6277] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6279] setpgid(0, 0 [pid 6278] <... openat resumed>) = 3 [pid 6277] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5852] <... restart_syscall resumed>) = 0 [pid 6280] <... openat resumed>) = 3 [pid 6279] <... setpgid resumed>) = 0 [pid 6278] write(3, "1000", 4 [pid 6277] exit_group(0 [pid 6280] write(3, "1000", 4 [pid 6279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6278] <... write resumed>) = 4 [pid 6277] <... exit_group resumed>) = ? [pid 6280] <... write resumed>) = 4 [pid 6279] <... openat resumed>) = 3 [pid 6278] close(3 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6280] close(3 [pid 6279] write(3, "1000", 4executing program executing program [pid 6278] <... close resumed>) = 0 ./strace-static-x86_64: Process 6281 attached [pid 6280] <... close resumed>) = 0 [pid 6279] <... write resumed>) = 4 [pid 6278] write(1, "executing program\n", 18 [pid 6277] +++ exited with 0 +++ [pid 6281] set_robust_list(0x555556b47660, 24 [pid 6280] write(1, "executing program\n", 18 [pid 6281] <... set_robust_list resumed>) = 0 [pid 6278] <... write resumed>) = 18 [pid 6280] <... write resumed>) = 18 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6277, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6281] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6279] close(3 [pid 6278] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6281 [pid 6280] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6281] <... prctl resumed>) = 0 [pid 6279] <... close resumed>) = 0 [pid 6279] write(1, "executing program\n", 18executing program ) = 18 [pid 6278] <... bpf resumed>) = 3 [pid 6281] setpgid(0, 0 [pid 6279] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6280] <... bpf resumed>) = 3 [pid 6279] <... bpf resumed>) = 3 [pid 6281] <... setpgid resumed>) = 0 [pid 6278] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6280] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6279] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6281] <... openat resumed>) = 3 [pid 6280] <... bpf resumed>) = 4 [pid 6278] <... bpf resumed>) = 4 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6281] write(3, "1000", 4 [pid 6278] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6279] <... bpf resumed>) = 4 [pid 6278] <... socket resumed>) = 5 [pid 6279] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6280] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6279] <... socket resumed>) = 5 [pid 6278] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6279] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6281] <... write resumed>) = 4 [pid 6279] <... openat resumed>) = 6 [pid 6279] write(6, "3", 1 [pid 6278] <... openat resumed>) = 6 [pid 6279] <... write resumed>) = 1 [pid 6279] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6279] exit_group(0./strace-static-x86_64: Process 6282 attached [pid 6281] close(3 [pid 6280] <... socket resumed>) = 5 [pid 6278] write(6, "3", 1 [pid 6282] set_robust_list(0x555556b47660, 24 [pid 6280] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6279] <... exit_group resumed>) = ? [pid 6278] <... write resumed>) = 1 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6282 [pid 6279] +++ exited with 0 +++ [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6279, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6283 attached [pid 6283] set_robust_list(0x555556b47660, 24 [pid 6282] <... set_robust_list resumed>) = 0 [pid 6281] <... close resumed>) = 0 [pid 6280] <... openat resumed>) = 6 [pid 6278] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6283 [ 99.875155][ T6278] FAULT_INJECTION: forcing a failure. [ 99.875155][ T6278] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 99.888239][ T6278] CPU: 1 UID: 0 PID: 6278 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 99.888268][ T6278] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 99.888280][ T6278] Call Trace: [ 99.888287][ T6278] [ 99.888296][ T6278] dump_stack_lvl+0x189/0x250 executing program [pid 6283] <... set_robust_list resumed>) = 0 [pid 6282] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6281] write(1, "executing program\n", 18 [pid 6280] write(6, "3", 1 [pid 6278] <... sendmsg resumed>) = 28 [pid 6283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6282] <... prctl resumed>) = 0 [pid 6281] <... write resumed>) = 18 [pid 6280] <... write resumed>) = 1 [pid 6278] exit_group(0 [pid 6283] setpgid(0, 0 [pid 6282] setpgid(0, 0 [ 99.888321][ T6278] ? __pfx____ratelimit+0x10/0x10 [ 99.888350][ T6278] ? __pfx_dump_stack_lvl+0x10/0x10 [ 99.888370][ T6278] ? __pfx__printk+0x10/0x10 [ 99.888402][ T6278] should_fail_ex+0x414/0x560 [ 99.888437][ T6278] strncpy_from_user+0x36/0x290 [ 99.888469][ T6278] strncpy_from_user_nofault+0x72/0x150 [ 99.888496][ T6278] bpf_bprintf_prepare+0xbbc/0x13d0 [ 99.888531][ T6278] ? __pfx_bpf_bprintf_prepare+0x10/0x10 [ 99.888562][ T6278] ? bpf_trace_printk+0xc1/0x190 [ 99.888583][ T6278] bpf_trace_printk+0xdb/0x190 [ 99.888602][ T6278] ? __pfx_bpf_trace_printk+0x10/0x10 [ 99.888622][ T6278] ? bpf_trace_run2+0x186/0x4b0 [ 99.888650][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.888682][ T6278] ? lock_acquire+0x5f/0x360 [ 99.888709][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.888740][ T6278] ? lock_release+0x4b/0x3e0 [ 99.888766][ T6278] ? tomoyo_check_open_permission+0x2c2/0x3b0 [ 99.888794][ T6278] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 99.888812][ T6278] bpf_trace_run2+0x281/0x4b0 [ 99.888836][ T6278] ? __pfx_process_measurement+0x10/0x10 [ 99.888866][ T6278] ? bpf_trace_run2+0x186/0x4b0 [ 99.888891][ T6278] ? __pfx_bpf_trace_run2+0x10/0x10 [ 99.888918][ T6278] ? __bpf_trace_contention_begin+0xcd/0x130 [ 99.888940][ T6278] __bpf_trace_contention_begin+0xdc/0x130 [ 99.888959][ T6278] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 99.888979][ T6278] ? mntput_no_expire+0xb9/0x9d0 [ 99.889005][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.889038][ T6278] ? unwind_next_frame+0xa5/0x2390 [ 99.889056][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.889087][ T6278] ? cpuacct_charge+0x10e/0x320 [ 99.889117][ T6278] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 99.889137][ T6278] __traceiter_contention_begin+0x77/0xb0 [ 99.889170][ T6278] trace_contention_begin+0x114/0x140 [ 99.889193][ T6278] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 99.889224][ T6278] ? rcu_qs+0xc4/0x170 [ 99.889253][ T6278] ? __pfx_rcu_qs+0x10/0x10 [ 99.889280][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.889313][ T6278] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 99.889344][ T6278] ? trace_rcu_utilization+0x47/0x1d0 [ 99.889363][ T6278] ? rcu_note_context_switch+0xdc1/0x1140 [ 99.889389][ T6278] ? __pfx___switch_to+0x10/0x10 [ 99.889417][ T6278] queued_spin_lock_slowpath+0x43/0x50 [ 99.889442][ T6278] do_raw_spin_lock+0x21f/0x290 [ 99.889463][ T6278] ? lock_acquire+0x5f/0x360 [ 99.889490][ T6278] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 99.889513][ T6278] ? do_raw_spin_lock+0x121/0x290 [ 99.889539][ T6278] raw_spin_rq_lock_nested+0x2a/0x140 [ 99.889571][ T6278] __schedule+0x32f/0x4d30 [ 99.889598][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.889642][ T6278] ? do_raw_spin_lock+0x121/0x290 [ 99.889664][ T6278] ? schedule+0x165/0x360 [ 99.889689][ T6278] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 99.889717][ T6278] ? __pfx___schedule+0x10/0x10 [ 99.889744][ T6278] ? schedule+0x91/0x360 [ 99.889768][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.889800][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.889830][ T6278] ? lock_release+0x4b/0x3e0 [ 99.889856][ T6278] ? rcu_is_watching+0x15/0xb0 [ 99.889890][ T6278] schedule+0x165/0x360 [ 99.889916][ T6278] ptrace_stop+0x575/0x940 [ 99.889948][ T6278] ptrace_notify+0x20f/0x2c0 [ 99.889978][ T6278] ? __pfx_ptrace_notify+0x10/0x10 [ 99.890010][ T6278] ? __pfx_ksys_write+0x10/0x10 [ 99.890042][ T6278] syscall_exit_work+0xc6/0x1d0 [ 99.890073][ T6278] do_syscall_64+0x2ad/0x3b0 [ 99.890103][ T6278] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.890123][ T6278] ? clear_bhb_loop+0x60/0xb0 [ 99.890146][ T6278] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.890165][ T6278] RIP: 0033:0x7f7d4bd77bd0 [ 99.890182][ T6278] Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d b1 14 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 [ 99.890199][ T6278] RSP: 002b:00007ffca308e228 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 99.890222][ T6278] RAX: 0000000000000001 RBX: 00007ffca308e240 RCX: 00007f7d4bd77bd0 [ 99.890236][ T6278] RDX: 0000000000000001 RSI: 00007ffca308e240 RDI: 0000000000000006 [ 99.890248][ T6278] RBP: 0000000000000006 R08: 0000000000000001 R09: 00007ffca308dfc7 [pid 6281] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6280] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6278] <... exit_group resumed>) = ? [pid 6283] <... setpgid resumed>) = 0 [pid 6282] <... setpgid resumed>) = 0 [pid 6281] <... bpf resumed>) = 3 [pid 6280] <... sendmsg resumed>) = 28 [pid 6283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6281] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6280] exit_group(0 [pid 6281] <... bpf resumed>) = 4 [pid 6280] <... exit_group resumed>) = ? [pid 6283] <... openat resumed>) = 3 [pid 6281] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6281] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6282] <... openat resumed>) = 3 [pid 6283] write(3, "1000", 4 [pid 6281] <... openat resumed>) = 6 [pid 6282] write(3, "1000", 4 [pid 6281] write(6, "3", 1 [pid 6283] <... write resumed>) = 4 [pid 6282] <... write resumed>) = 4 [pid 6282] close(3 [pid 6283] close(3 [pid 6281] <... write resumed>) = 1 [pid 6280] +++ exited with 0 +++ [pid 6283] <... close resumed>) = 0 [pid 6282] <... close resumed>) = 0 [pid 6281] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 executing program [pid 6283] write(1, "executing program\n", 18 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6280, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6283] <... write resumed>) = 18 [pid 6281] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6283] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6282] write(1, "executing program\n", 18 [pid 6281] exit_group(0 [pid 5849] <... restart_syscall resumed>) = 0 executing program [pid 6282] <... write resumed>) = 18 [pid 6281] <... exit_group resumed>) = ? [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6284 attached [pid 6283] <... bpf resumed>) = 3 [pid 6282] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6281] +++ exited with 0 +++ [pid 6278] +++ exited with 0 +++ [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6284 [pid 6284] set_robust_list(0x555556b47660, 24 [pid 6283] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6281, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6278, si_uid=0, si_status=0, si_utime=0, si_stime=43 /* 0.43 s */} --- [pid 6284] <... set_robust_list resumed>) = 0 [pid 6284] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6283] <... bpf resumed>) = 4 [pid 6284] <... prctl resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6284] setpgid(0, 0./strace-static-x86_64: Process 6285 attached ) = 0 [pid 6283] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC./strace-static-x86_64: Process 6286 attached [pid 6285] set_robust_list(0x555556b47660, 24 [pid 6284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6283] <... socket resumed>) = 5 [pid 6282] <... bpf resumed>) = 3 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6285 [pid 6286] set_robust_list(0x555556b47660, 24 [pid 6285] <... set_robust_list resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6286 [pid 6286] <... set_robust_list resumed>) = 0 [pid 6284] <... openat resumed>) = 3 [pid 6283] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6282] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6286] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6285] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6286] <... prctl resumed>) = 0 [pid 6284] write(3, "1000", 4 [pid 6283] <... openat resumed>) = 6 [pid 6286] setpgid(0, 0 [pid 6282] <... bpf resumed>) = 4 [pid 6286] <... setpgid resumed>) = 0 [pid 6285] <... prctl resumed>) = 0 [pid 6284] <... write resumed>) = 4 [pid 6283] write(6, "3", 1 [pid 6286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6285] setpgid(0, 0 [pid 6284] close(3 [pid 6283] <... write resumed>) = 1 [pid 6286] <... openat resumed>) = 3 [pid 6285] <... setpgid resumed>) = 0 [pid 6284] <... close resumed>) = 0 [pid 6283] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6282] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6286] write(3, "1000", 4 [ 99.890269][ T6278] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 99.890281][ T6278] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 99.890301][ T6278] [pid 6285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6284] write(1, "executing program\n", 18executing program [pid 6283] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6282] <... socket resumed>) = 5 [pid 6286] <... write resumed>) = 4 [pid 6285] <... openat resumed>) = 3 [pid 6284] <... write resumed>) = 18 [pid 6283] exit_group(0 [pid 6282] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6286] close(3 [pid 6285] write(3, "1000", 4 [pid 6284] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6283] <... exit_group resumed>) = ? [pid 6282] <... openat resumed>) = 6 [pid 6286] <... close resumed>) = 0 [pid 6285] <... write resumed>) = 4 [pid 6284] <... bpf resumed>) = 3 [pid 6282] write(6, "3", 1 [pid 6286] write(1, "executing program\n", 18executing program [pid 6282] <... write resumed>) = 1 [pid 6286] <... write resumed>) = 18 [pid 6286] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6285] close(3 [pid 6282] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6285] <... close resumed>) = 0 [pid 6284] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24executing program [pid 6283] +++ exited with 0 +++ [pid 6285] write(1, "executing program\n", 18 [pid 6284] <... bpf resumed>) = 4 [pid 6282] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6285] <... write resumed>) = 18 [pid 6284] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6285] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6284] <... socket resumed>) = 5 [pid 6282] exit_group(0 [pid 6286] <... bpf resumed>) = 3 [pid 6285] <... bpf resumed>) = 3 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6283, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6282] <... exit_group resumed>) = ? [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6286] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6285] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6284] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5845] <... restart_syscall resumed>) = 0 [pid 6286] <... bpf resumed>) = 4 [pid 6285] <... bpf resumed>) = 4 [pid 6284] <... openat resumed>) = 6 [pid 6282] +++ exited with 0 +++ [pid 6286] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6285] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6284] write(6, "3", 1 [pid 6286] <... socket resumed>) = 5 [pid 6285] <... socket resumed>) = 5 [pid 6284] <... write resumed>) = 1 [pid 6286] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6285] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6282, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 6284] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6286] <... openat resumed>) = 6 [pid 6285] <... openat resumed>) = 6 [ 100.415829][ T6284] FAULT_INJECTION: forcing a failure. [ 100.415829][ T6284] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 100.428910][ T6284] CPU: 1 UID: 0 PID: 6284 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 100.428937][ T6284] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 100.428947][ T6284] Call Trace: [ 100.428954][ T6284] [ 100.428961][ T6284] dump_stack_lvl+0x189/0x250 [ 100.428984][ T6284] ? __pfx____ratelimit+0x10/0x10 [ 100.429009][ T6284] ? __pfx_dump_stack_lvl+0x10/0x10 [ 100.429026][ T6284] ? __pfx__printk+0x10/0x10 [ 100.429054][ T6284] should_fail_ex+0x414/0x560 [ 100.429084][ T6284] strncpy_from_user+0x36/0x290 [ 100.429111][ T6284] strncpy_from_user_nofault+0x72/0x150 [ 100.429135][ T6284] bpf_bprintf_prepare+0xbbc/0x13d0 [ 100.429166][ T6284] ? __pfx_bpf_bprintf_prepare+0x10/0x10 [ 100.429192][ T6284] ? bpf_trace_printk+0xc1/0x190 [ 100.429210][ T6284] bpf_trace_printk+0xdb/0x190 [ 100.429226][ T6284] ? __pfx_bpf_trace_printk+0x10/0x10 [ 100.429243][ T6284] ? bpf_trace_run2+0x186/0x4b0 [ 100.429262][ T6284] ? rcu_is_watching+0x15/0xb0 [ 100.429290][ T6284] ? lock_acquire+0x5f/0x360 [ 100.429313][ T6284] ? rcu_is_watching+0x15/0xb0 [ 100.429346][ T6284] ? lock_release+0x4b/0x3e0 [ 100.429372][ T6284] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 100.429388][ T6284] bpf_trace_run2+0x281/0x4b0 [ 100.429408][ T6284] ? bpf_trace_run2+0x186/0x4b0 [ 100.429430][ T6284] ? __pfx_bpf_trace_run2+0x10/0x10 [ 100.429451][ T6284] ? __switch_to+0xdae/0x1670 [ 100.429474][ T6284] ? __bpf_trace_contention_begin+0xcd/0x130 [ 100.429493][ T6284] __bpf_trace_contention_begin+0xdc/0x130 [ 100.429509][ T6284] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 100.429525][ T6284] ? finish_task_switch+0x18b/0x950 [ 100.429547][ T6284] ? rcu_is_watching+0x15/0xb0 [ 100.429576][ T6284] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 100.429595][ T6284] __traceiter_contention_begin+0x77/0xb0 [ 100.429624][ T6284] trace_contention_begin+0x114/0x140 [ 100.429643][ T6284] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 100.429671][ T6284] ? __schedule+0x1755/0x4d30 [ 100.429696][ T6284] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 100.429728][ T6284] queued_spin_lock_slowpath+0x43/0x50 [ 100.429749][ T6284] do_raw_spin_lock+0x21f/0x290 [ 100.429770][ T6284] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 100.429793][ T6284] _raw_spin_lock_irq+0xae/0xf0 [ 100.429815][ T6284] ? __pfx__raw_spin_lock_irq+0x10/0x10 [ 100.429837][ T6284] ? rcu_is_watching+0x15/0xb0 [ 100.429865][ T6284] ptrace_stop+0x5a1/0x940 [ 100.429893][ T6284] ptrace_notify+0x20f/0x2c0 [ 100.429919][ T6284] ? __pfx_ptrace_notify+0x10/0x10 [ 100.429947][ T6284] ? rcu_is_watching+0x15/0xb0 [ 100.429976][ T6284] syscall_trace_enter+0x60/0x160 [ 100.430002][ T6284] do_syscall_64+0xd3/0x3b0 [ 100.430028][ T6284] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 100.430045][ T6284] ? clear_bhb_loop+0x60/0xb0 [ 100.430067][ T6284] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 100.430083][ T6284] RIP: 0033:0x7f7d4bd78999 [ 100.430098][ T6284] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 100.430113][ T6284] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 100.430133][ T6284] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [ 100.430146][ T6284] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [ 100.430157][ T6284] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6287 attached [pid 6286] write(6, "3", 1 [pid 6285] write(6, "3", 1 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6287 [pid 6287] set_robust_list(0x555556b47660, 24 [pid 6286] <... write resumed>) = 1 [pid 6285] <... write resumed>) = 1 [pid 6284] <... sendmsg resumed>) = 28 [pid 6287] <... set_robust_list resumed>) = 0 [pid 6286] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6285] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6287] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6286] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6285] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6284] exit_group(0 [pid 6287] <... prctl resumed>) = 0 [pid 6286] exit_group(0 [pid 6285] exit_group(0 [pid 6286] <... exit_group resumed>) = ? [pid 6285] <... exit_group resumed>) = ? [pid 6287] setpgid(0, 0 [pid 6285] +++ exited with 0 +++ [pid 6284] <... exit_group resumed>) = ? [pid 6287] <... setpgid resumed>) = 0 [pid 6287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6285, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6287] <... openat resumed>) = 3 [pid 5852] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6288 attached , child_tidptr=0x555556b47650) = 6288 [pid 6288] set_robust_list(0x555556b47660, 24) = 0 [pid 6287] write(3, "1000", 4 [pid 6288] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6287] <... write resumed>) = 4 [pid 6288] <... prctl resumed>) = 0 [pid 6287] close(3 [pid 6288] setpgid(0, 0 [pid 6287] <... close resumed>) = 0 [pid 6286] +++ exited with 0 +++ [pid 6284] +++ exited with 0 +++ [pid 6288] <... setpgid resumed>) = 0 [pid 6287] write(1, "executing program\n", 18executing program [pid 6288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6287] <... write resumed>) = 18 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6286, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6288] <... openat resumed>) = 3 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6287] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6288] write(3, "1000", 4 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6284, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5849] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6289 attached [pid 6288] <... write resumed>) = 4 [pid 6287] <... bpf resumed>) = 3 [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6289 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6289] set_robust_list(0x555556b47660, 24 [pid 6288] close(3 [pid 6289] <... set_robust_list resumed>) = 0 [pid 6288] <... close resumed>) = 0 [pid 6287] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6288] write(1, "executing program\n", 18executing program [pid 6289] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6288] <... write resumed>) = 18 [pid 6288] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6289] <... prctl resumed>) = 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6289] setpgid(0, 0 [pid 6288] <... bpf resumed>) = 3 [pid 6289] <... setpgid resumed>) = 0 [pid 6287] <... bpf resumed>) = 4 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6288] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24./strace-static-x86_64: Process 6290 attached ./strace-static-x86_64: Process 6291 attached [pid 6290] set_robust_list(0x555556b47660, 24 [pid 6289] <... openat resumed>) = 3 [pid 6288] <... bpf resumed>) = 4 [pid 6287] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6290 [pid 6291] set_robust_list(0x555556b47660, 24 [pid 6290] <... set_robust_list resumed>) = 0 [pid 6289] write(3, "1000", 4 [pid 6288] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6287] <... socket resumed>) = 5 [pid 6291] <... set_robust_list resumed>) = 0 [pid 6290] prctl(PR_SET_PDEATHSIG, SIGKILL [ 100.430168][ T6284] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 100.430178][ T6284] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 100.430196][ T6284] [pid 6289] <... write resumed>) = 4 [pid 6287] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6288] <... socket resumed>) = 5 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6291 [pid 6291] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6290] <... prctl resumed>) = 0 [pid 6289] close(3 [pid 6287] <... openat resumed>) = 6 [pid 6291] <... prctl resumed>) = 0 [pid 6290] setpgid(0, 0 [pid 6289] <... close resumed>) = 0 [pid 6288] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6291] setpgid(0, 0 [pid 6290] <... setpgid resumed>) = 0 [pid 6289] write(1, "executing program\n", 18executing program [pid 6287] write(6, "3", 1 [pid 6291] <... setpgid resumed>) = 0 [pid 6290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6289] <... write resumed>) = 18 [pid 6288] <... openat resumed>) = 6 [pid 6287] <... write resumed>) = 1 [pid 6291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6290] <... openat resumed>) = 3 [pid 6289] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6287] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6291] <... openat resumed>) = 3 [pid 6290] write(3, "1000", 4 [pid 6289] <... bpf resumed>) = 3 [pid 6288] write(6, "3", 1 [pid 6290] <... write resumed>) = 4 [pid 6287] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6291] write(3, "1000", 4 [pid 6288] <... write resumed>) = 1 [pid 6291] <... write resumed>) = 4 [pid 6288] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6291] close(3 [pid 6288] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6291] <... close resumed>) = 0 [pid 6288] exit_group(0 [pid 6291] write(1, "executing program\n", 18 [pid 6288] <... exit_group resumed>) = ? executing program [pid 6291] <... write resumed>) = 18 [pid 6290] close(3 [pid 6289] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6287] exit_group(0 [pid 6291] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6290] <... close resumed>) = 0 [pid 6289] <... bpf resumed>) = 4 [pid 6288] +++ exited with 0 +++ executing program [pid 6287] <... exit_group resumed>) = ? [pid 6291] <... bpf resumed>) = 3 [pid 6290] write(1, "executing program\n", 18 [pid 6289] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6290] <... write resumed>) = 18 [pid 6291] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6290] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6289] <... socket resumed>) = 5 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6288, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6291] <... bpf resumed>) = 4 [pid 6290] <... bpf resumed>) = 3 [pid 6289] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6287] +++ exited with 0 +++ [pid 6291] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6290] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6289] <... openat resumed>) = 6 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6287, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6291] <... socket resumed>) = 5 [pid 6290] <... bpf resumed>) = 4 [pid 6289] write(6, "3", 1 [pid 5852] <... restart_syscall resumed>) = 0 [pid 6291] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6290] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6289] <... write resumed>) = 1 [pid 6291] <... openat resumed>) = 6 [pid 6290] <... socket resumed>) = 5 [pid 6289] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6291] write(6, "3", 1 [pid 6290] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6289] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6291] <... write resumed>) = 1 [pid 6290] <... openat resumed>) = 6 [pid 6289] exit_group(0) = ? [pid 6291] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6289] +++ exited with 0 +++ [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6290] write(6, "3", 1 [pid 6291] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6290] <... write resumed>) = 1 [pid 6290] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) ./strace-static-x86_64: Process 6292 attached [pid 6290] exit_group(0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6289, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6292] set_robust_list(0x555556b47660, 24 [pid 6291] exit_group(0 [pid 6290] <... exit_group resumed>) = ? [pid 6291] <... exit_group resumed>) = ? [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6292 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6292] <... set_robust_list resumed>) = 0 [pid 6292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6293 attached [pid 6292] setpgid(0, 0 [pid 6291] +++ exited with 0 +++ [pid 6290] +++ exited with 0 +++ [pid 5848] <... restart_syscall resumed>) = 0 [pid 6292] <... setpgid resumed>) = 0 [pid 6292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6293] set_robust_list(0x555556b47660, 24 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6290, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6291, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6293] <... set_robust_list resumed>) = 0 [pid 6292] <... openat resumed>) = 3 [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6293 [pid 6293] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6292] write(3, "1000", 4 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] <... restart_syscall resumed>) = 0 [pid 6293] <... prctl resumed>) = 0 [pid 6292] <... write resumed>) = 4 [pid 6293] setpgid(0, 0 [pid 6292] close(3 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6293] <... setpgid resumed>) = 0 [pid 6292] <... close resumed>) = 0 [pid 6293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6292] write(1, "executing program\n", 18executing program ./strace-static-x86_64: Process 6294 attached ) = 18 [pid 6294] set_robust_list(0x555556b47660, 24) = 0 [pid 6292] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6294] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6293] <... openat resumed>) = 3 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6294 ./strace-static-x86_64: Process 6295 attached [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6295 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6295] set_robust_list(0x555556b47660, 24 [pid 6294] <... prctl resumed>) = 0 [pid 6295] <... set_robust_list resumed>) = 0 [pid 6293] write(3, "1000", 4 [pid 6294] setpgid(0, 0 [pid 6295] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6294] <... setpgid resumed>) = 0 [pid 6293] <... write resumed>) = 4 [pid 6292] <... bpf resumed>) = 3 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6296 ./strace-static-x86_64: Process 6296 attached [pid 6293] close(3executing program [pid 6296] set_robust_list(0x555556b47660, 24 [pid 6295] <... prctl resumed>) = 0 [pid 6294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6293] <... close resumed>) = 0 [pid 6292] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6295] setpgid(0, 0 [pid 6293] write(1, "executing program\n", 18 [pid 6296] <... set_robust_list resumed>) = 0 [pid 6295] <... setpgid resumed>) = 0 [pid 6293] <... write resumed>) = 18 [pid 6294] <... openat resumed>) = 3 [pid 6296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6293] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6292] <... bpf resumed>) = 4 [pid 6296] setpgid(0, 0 [pid 6295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6294] write(3, "1000", 4 [pid 6296] <... setpgid resumed>) = 0 [pid 6296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6294] <... write resumed>) = 4 [pid 6293] <... bpf resumed>) = 3 [pid 6294] close(3 [pid 6296] <... openat resumed>) = 3 [pid 6295] <... openat resumed>) = 3 [pid 6294] <... close resumed>) = 0 [pid 6293] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6292] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6295] write(3, "1000", 4 [pid 6294] write(1, "executing program\n", 18executing program [pid 6292] <... socket resumed>) = 5 [pid 6296] write(3, "1000", 4 [pid 6295] <... write resumed>) = 4 [pid 6294] <... write resumed>) = 18 [pid 6293] <... bpf resumed>) = 4 [pid 6292] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6296] <... write resumed>) = 4 [pid 6293] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6295] close(3 [pid 6294] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6292] <... openat resumed>) = 6 [pid 6295] <... close resumed>) = 0 [pid 6296] close(3 [pid 6293] <... socket resumed>) = 5 [pid 6296] <... close resumed>) = 0 [pid 6293] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6296] write(1, "executing program\n", 18 [pid 6294] <... bpf resumed>) = 3 [pid 6293] <... openat resumed>) = 6 executing program [pid 6296] <... write resumed>) = 18 [pid 6293] write(6, "3", 1 [pid 6296] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6293] <... write resumed>) = 1 [pid 6296] <... bpf resumed>) = 3 [pid 6295] write(1, "executing program\n", 18 [pid 6294] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24executing program [pid 6292] write(6, "3", 1 [pid 6296] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6295] <... write resumed>) = 18 [pid 6294] <... bpf resumed>) = 4 [pid 6293] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6292] <... write resumed>) = 1 [pid 6296] <... bpf resumed>) = 4 [pid 6295] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6294] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6293] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6292] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6293] exit_group(0 [pid 6292] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6293] <... exit_group resumed>) = ? [pid 6292] exit_group(0 [pid 6296] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6294] <... socket resumed>) = 5 [pid 6292] <... exit_group resumed>) = ? [pid 6296] <... socket resumed>) = 5 [pid 6294] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6296] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6294] <... openat resumed>) = 6 [pid 6293] +++ exited with 0 +++ [pid 6296] <... openat resumed>) = 6 [pid 6294] write(6, "3", 1 [pid 6296] write(6, "3", 1 [pid 6294] <... write resumed>) = 1 [pid 6296] <... write resumed>) = 1 [pid 6294] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6296] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6294] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6295] <... bpf resumed>) = 3 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6293, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6296] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6294] exit_group(0 [pid 6296] exit_group(0 [pid 6294] <... exit_group resumed>) = ? [pid 6296] <... exit_group resumed>) = ? [pid 6295] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6292] +++ exited with 0 +++ [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6296] +++ exited with 0 +++ [pid 5845] <... restart_syscall resumed>) = 0 [pid 6294] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6292, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6296, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6294, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5848] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6297 attached [pid 6295] <... bpf resumed>) = 4 [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6297] set_robust_list(0x555556b47660, 24 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6297 [pid 6295] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5852] <... restart_syscall resumed>) = 0 [pid 6295] <... socket resumed>) = 5 [pid 6295] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6298 attached [pid 6297] <... set_robust_list resumed>) = 0 [pid 6297] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6295] <... openat resumed>) = 6 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] <... restart_syscall resumed>) = 0 [pid 6298] set_robust_list(0x555556b47660, 24 [pid 6297] <... prctl resumed>) = 0 [pid 6295] write(6, "3", 1./strace-static-x86_64: Process 6299 attached [pid 6298] <... set_robust_list resumed>) = 0 [pid 6297] setpgid(0, 0 [pid 6295] <... write resumed>) = 1 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6298 [pid 6299] set_robust_list(0x555556b47660, 24 [pid 6298] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6297] <... setpgid resumed>) = 0 [pid 6295] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6299 [pid 6299] <... set_robust_list resumed>) = 0 [pid 6298] <... prctl resumed>) = 0 [pid 6297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6295] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6298] setpgid(0, 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6299] setpgid(0, 0) = 0 [pid 6299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6299] write(3, "1000", 4) = 4 [pid 6299] close(3) = 0 [pid 6299] write(1, "executing program\n", 18 [pid 6295] exit_group(0executing program [pid 6299] <... write resumed>) = 18 [pid 6298] <... setpgid resumed>) = 0 [pid 6297] <... openat resumed>) = 3 [pid 6295] <... exit_group resumed>) = ? [pid 6299] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6300 attached [pid 6297] write(3, "1000", 4) = 4 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6300 [pid 6299] <... bpf resumed>) = 3 [pid 6299] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6297] close(3 [pid 6300] set_robust_list(0x555556b47660, 24 [pid 6298] <... openat resumed>) = 3 [pid 6300] <... set_robust_list resumed>) = 0 [pid 6297] <... close resumed>) = 0 [pid 6299] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6298] write(3, "1000", 4executing program [pid 6300] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6297] write(1, "executing program\n", 18 [pid 6300] <... prctl resumed>) = 0 [pid 6298] <... write resumed>) = 4 [pid 6297] <... write resumed>) = 18 [pid 6298] close(3 executing program [pid 6300] setpgid(0, 0 [pid 6299] <... socket resumed>) = 5 [pid 6298] <... close resumed>) = 0 [pid 6297] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6299] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6299] write(6, "3", 1) = 1 [pid 6299] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6299] exit_group(0) = ? [pid 6300] <... setpgid resumed>) = 0 [pid 6298] write(1, "executing program\n", 18 [pid 6295] +++ exited with 0 +++ [pid 6299] +++ exited with 0 +++ [pid 6298] <... write resumed>) = 18 [pid 6297] <... bpf resumed>) = 3 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6295, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6297] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6300] <... openat resumed>) = 3 [pid 6298] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6299, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6297] <... bpf resumed>) = 4 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6300] write(3, "1000", 4./strace-static-x86_64: Process 6302 attached ./strace-static-x86_64: Process 6301 attached ) = 4 [pid 6298] <... bpf resumed>) = 3 [pid 6297] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6302] set_robust_list(0x555556b47660, 24 [pid 6301] set_robust_list(0x555556b47660, 24 [pid 6300] close(3 [pid 6297] <... socket resumed>) = 5 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6302 [pid 6298] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6301 [pid 6302] <... set_robust_list resumed>) = 0 [pid 6301] <... set_robust_list resumed>) = 0 [pid 6300] <... close resumed>) = 0 [pid 6297] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWRexecuting program [pid 6301] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6300] write(1, "executing program\n", 18 [pid 6297] <... openat resumed>) = 6 [pid 6302] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6301] <... prctl resumed>) = 0 [pid 6300] <... write resumed>) = 18 [pid 6302] <... prctl resumed>) = 0 [pid 6302] setpgid(0, 0 [pid 6301] setpgid(0, 0 [pid 6300] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6298] <... bpf resumed>) = 4 [pid 6302] <... setpgid resumed>) = 0 [pid 6301] <... setpgid resumed>) = 0 [pid 6297] write(6, "3", 1 [pid 6302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6297] <... write resumed>) = 1 [pid 6298] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6298] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6302] <... openat resumed>) = 3 [pid 6298] <... openat resumed>) = 6 [pid 6298] write(6, "3", 1 [pid 6297] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6302] write(3, "1000", 4 [pid 6301] <... openat resumed>) = 3 [pid 6297] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6300] <... bpf resumed>) = 3 [pid 6302] <... write resumed>) = 4 [pid 6298] <... write resumed>) = 1 [pid 6297] exit_group(0 [pid 6302] close(3 [pid 6301] write(3, "1000", 4 [pid 6300] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6297] <... exit_group resumed>) = ? [pid 6302] <... close resumed>) = 0 [pid 6301] <... write resumed>) = 4 [pid 6300] <... bpf resumed>) = 4 [pid 6302] write(1, "executing program\n", 18executing program [pid 6301] close(3 [pid 6302] <... write resumed>) = 18 [pid 6300] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6302] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148executing program [pid 6301] <... close resumed>) = 0 [pid 6301] write(1, "executing program\n", 18 [pid 6300] <... socket resumed>) = 5 [pid 6298] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6301] <... write resumed>) = 18 [pid 6298] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6298] exit_group(0) = ? [pid 6302] <... bpf resumed>) = 3 [pid 6301] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6300] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6298] +++ exited with 0 +++ [pid 6302] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6301] <... bpf resumed>) = 3 [pid 6301] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6298, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6300] <... openat resumed>) = 6 [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6300] write(6, "3", 1) = 1 [pid 6300] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6297] +++ exited with 0 +++ [pid 6300] exit_group(0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6297, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6300] <... exit_group resumed>) = ? [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 5845] <... restart_syscall resumed>) = 0 [pid 6301] <... bpf resumed>) = 4 [pid 6302] <... bpf resumed>) = 4 [pid 5846] <... restart_syscall resumed>) = 0 [pid 6302] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6301] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6302] <... socket resumed>) = 5 [pid 6301] <... socket resumed>) = 5 [pid 6300] +++ exited with 0 +++ [pid 6302] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6301] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6300, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6302] <... openat resumed>) = 6 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6301] <... openat resumed>) = 6 [pid 6302] write(6, "3", 1./strace-static-x86_64: Process 6303 attached ) = 1 [pid 6301] write(6, "3", 1 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6303 [pid 6302] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6301] <... write resumed>) = 1 [pid 6302] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5848] <... restart_syscall resumed>) = 0 [pid 6303] set_robust_list(0x555556b47660, 24./strace-static-x86_64: Process 6304 attached [pid 6304] set_robust_list(0x555556b47660, 24 [pid 6301] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6304] <... set_robust_list resumed>) = 0 [pid 6301] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6304] setpgid(0, 0) = 0 [pid 6304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6303] <... set_robust_list resumed>) = 0 [pid 6302] exit_group(0 [pid 6301] exit_group(0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6303] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6301] <... exit_group resumed>) = ? [pid 6304] <... openat resumed>) = 3 [pid 6302] <... exit_group resumed>) = ? [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6304 [pid 6304] write(3, "1000", 4) = 4 [pid 6303] <... prctl resumed>) = 0 [pid 6304] close(3 [pid 6303] setpgid(0, 0 [pid 6304] <... close resumed>) = 0 [pid 6303] <... setpgid resumed>) = 0 [pid 6304] write(1, "executing program\n", 18 [pid 6303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program [pid 6304] <... write resumed>) = 18 [pid 6303] <... openat resumed>) = 3 [pid 6304] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6302] +++ exited with 0 +++ [pid 6303] write(3, "1000", 4./strace-static-x86_64: Process 6305 attached ) = 4 [pid 6301] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6302, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 6305] set_robust_list(0x555556b47660, 24 [pid 6303] close(3 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6305 [pid 6305] <... set_robust_list resumed>) = 0 [pid 6303] <... close resumed>) = 0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6301, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6305] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6303] write(1, "executing program\n", 18 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] restart_syscall(<... resuming interrupted clone ...>executing program [pid 6305] <... prctl resumed>) = 0 [pid 6303] <... write resumed>) = 18 ./strace-static-x86_64: Process 6306 attached [pid 6305] setpgid(0, 0 [pid 6303] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6306 [pid 6304] <... bpf resumed>) = 3 [pid 6303] <... bpf resumed>) = 3 [pid 6305] <... setpgid resumed>) = 0 [pid 6305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6304] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6303] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6305] <... openat resumed>) = 3 [pid 6306] set_robust_list(0x555556b47660, 24 [pid 6305] write(3, "1000", 4 [pid 6304] <... bpf resumed>) = 4 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6304] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6304] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6306] <... set_robust_list resumed>) = 0 [pid 6305] <... write resumed>) = 4 [pid 6304] <... openat resumed>) = 6 [pid 6303] <... bpf resumed>) = 4 [pid 6306] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6305] close(3 [pid 6306] <... prctl resumed>) = 0 [pid 6305] <... close resumed>) = 0 [pid 6306] setpgid(0, 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program [pid 6306] <... setpgid resumed>) = 0 [pid 6305] write(1, "executing program\n", 18 [pid 6303] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6304] write(6, "3", 1 [pid 6306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6305] <... write resumed>) = 18 [pid 6303] <... socket resumed>) = 5 [pid 6306] <... openat resumed>) = 3 [pid 6305] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6304] <... write resumed>) = 1 [pid 6303] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR./strace-static-x86_64: Process 6307 attached [pid 6306] write(3, "1000", 4 [pid 6307] set_robust_list(0x555556b47660, 24 [pid 6306] <... write resumed>) = 4 [pid 6305] <... bpf resumed>) = 3 [ 101.029800][ T6304] FAULT_INJECTION: forcing a failure. [ 101.029800][ T6304] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 101.042899][ T6304] CPU: 1 UID: 0 PID: 6304 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 101.042928][ T6304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 101.042941][ T6304] Call Trace: [ 101.042949][ T6304] [ 101.042958][ T6304] dump_stack_lvl+0x189/0x250 [ 101.042983][ T6304] ? __pfx____ratelimit+0x10/0x10 [ 101.043011][ T6304] ? __pfx_dump_stack_lvl+0x10/0x10 [ 101.043032][ T6304] ? __pfx__printk+0x10/0x10 [ 101.043064][ T6304] should_fail_ex+0x414/0x560 [ 101.043098][ T6304] strncpy_from_user+0x36/0x290 [ 101.043131][ T6304] strncpy_from_user_nofault+0x72/0x150 [ 101.043158][ T6304] bpf_bprintf_prepare+0xbbc/0x13d0 [ 101.043185][ T6304] ? bpf_bprintf_cleanup+0x9f/0xd0 [ 101.043218][ T6304] ? __pfx_bpf_bprintf_prepare+0x10/0x10 [ 101.043244][ T6304] ? rcu_is_watching+0x15/0xb0 [ 101.043278][ T6304] ? rcu_is_watching+0x15/0xb0 [ 101.043309][ T6304] ? bpf_trace_printk+0xc1/0x190 [ 101.043330][ T6304] bpf_trace_printk+0xdb/0x190 [ 101.043350][ T6304] ? __pfx_bpf_trace_printk+0x10/0x10 [ 101.043366][ T6304] ? bpf_trace_run2+0x186/0x4b0 [ 101.043392][ T6304] ? bpf_trace_run2+0x186/0x4b0 [ 101.043415][ T6304] ? rcu_is_watching+0x15/0xb0 [ 101.043445][ T6304] ? lock_acquire+0x5f/0x360 [ 101.043474][ T6304] ? __bpf_trace_contention_begin+0xcd/0x130 [ 101.043497][ T6304] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 101.043522][ T6304] bpf_trace_run2+0x281/0x4b0 [ 101.043547][ T6304] ? bpf_trace_run2+0x186/0x4b0 [ 101.043572][ T6304] ? __pfx_bpf_trace_run2+0x10/0x10 [ 101.043598][ T6304] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 101.043617][ T6304] ? __bpf_trace_contention_begin+0xcd/0x130 [ 101.043640][ T6304] __bpf_trace_contention_begin+0xdc/0x130 [ 101.043659][ T6304] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 101.043677][ T6304] ? __pv_queued_spin_lock_slowpath+0xa05/0xb60 [ 101.043712][ T6304] ? do_raw_spin_lock+0x121/0x290 [ 101.043736][ T6304] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 101.043756][ T6304] __traceiter_contention_begin+0x77/0xb0 [ 101.043790][ T6304] trace_contention_begin+0x114/0x140 [ 101.043812][ T6304] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 101.043847][ T6304] ? rcu_is_watching+0x15/0xb0 [ 101.043877][ T6304] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 101.043908][ T6304] ? rcu_is_watching+0x15/0xb0 [ 101.043941][ T6304] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 101.043970][ T6304] queued_spin_lock_slowpath+0x43/0x50 [ 101.043994][ T6304] do_raw_spin_lock+0x21f/0x290 [ 101.044019][ T6304] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 101.044040][ T6304] ? do_notify_parent_cldstop+0x87d/0x9a0 [ 101.044077][ T6304] _raw_spin_lock_irq+0xae/0xf0 [ 101.044102][ T6304] ? __pfx__raw_spin_lock_irq+0x10/0x10 [ 101.044127][ T6304] ? rcu_is_watching+0x15/0xb0 [ 101.044162][ T6304] cgroup_enter_frozen+0x64/0x2b0 [ 101.044187][ T6304] ptrace_stop+0x566/0x940 [ 101.044220][ T6304] ptrace_notify+0x20f/0x2c0 [ 101.044250][ T6304] ? __pfx_ptrace_notify+0x10/0x10 [ 101.044284][ T6304] ? rcu_is_watching+0x15/0xb0 [ 101.044318][ T6304] syscall_trace_enter+0x60/0x160 [ 101.044348][ T6304] do_syscall_64+0xd3/0x3b0 [ 101.044379][ T6304] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.044399][ T6304] ? clear_bhb_loop+0x60/0xb0 [ 101.044421][ T6304] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.044441][ T6304] RIP: 0033:0x7f7d4bd78999 [ 101.044457][ T6304] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 101.044474][ T6304] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 101.044497][ T6304] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [ 101.044518][ T6304] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [ 101.044531][ T6304] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [ 101.044544][ T6304] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [pid 6304] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6303] <... openat resumed>) = 6 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6307 [pid 6307] <... set_robust_list resumed>) = 0 [pid 6306] close(3 [pid 6305] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6307] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6306] <... close resumed>) = 0 [ 101.044556][ T6304] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 101.044577][ T6304] [ 101.454685][ T6305] FAULT_INJECTION: forcing a failure. [ 101.454685][ T6305] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 101.467754][ T6305] CPU: 0 UID: 0 PID: 6305 Comm: syz-executor241 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) [ 101.467783][ T6305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 101.467795][ T6305] Call Trace: [ 101.467803][ T6305] [ 101.467811][ T6305] dump_stack_lvl+0x189/0x250 [ 101.467836][ T6305] ? __pfx____ratelimit+0x10/0x10 [ 101.467865][ T6305] ? __pfx_dump_stack_lvl+0x10/0x10 [ 101.467885][ T6305] ? __pfx__printk+0x10/0x10 [ 101.467917][ T6305] should_fail_ex+0x414/0x560 [ 101.467951][ T6305] strncpy_from_user+0x36/0x290 [ 101.467983][ T6305] strncpy_from_user_nofault+0x72/0x150 [ 101.468010][ T6305] bpf_bprintf_prepare+0xbbc/0x13d0 [ 101.468045][ T6305] ? __pfx_bpf_bprintf_prepare+0x10/0x10 [ 101.468076][ T6305] ? bpf_trace_printk+0xc1/0x190 [ 101.468096][ T6305] bpf_trace_printk+0xdb/0x190 [ 101.468115][ T6305] ? __pfx_bpf_trace_printk+0x10/0x10 [ 101.468135][ T6305] ? bpf_trace_run2+0x186/0x4b0 [ 101.468158][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.468189][ T6305] ? lock_acquire+0x5f/0x360 [ 101.468216][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.468246][ T6305] ? lock_release+0x4b/0x3e0 [ 101.468278][ T6305] ? tomoyo_check_open_permission+0x2c2/0x3b0 [ 101.468307][ T6305] bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 [ 101.468325][ T6305] bpf_trace_run2+0x281/0x4b0 [ 101.468349][ T6305] ? __pfx_process_measurement+0x10/0x10 [ 101.468378][ T6305] ? bpf_trace_run2+0x186/0x4b0 [ 101.468402][ T6305] ? __pfx_bpf_trace_run2+0x10/0x10 [ 101.468429][ T6305] ? __bpf_trace_contention_begin+0xcd/0x130 [ 101.468451][ T6305] __bpf_trace_contention_begin+0xdc/0x130 [ 101.468470][ T6305] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 101.468490][ T6305] ? mntput_no_expire+0xb9/0x9d0 [ 101.468516][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.468550][ T6305] ? unwind_next_frame+0xa5/0x2390 [ 101.468569][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.468599][ T6305] ? cpuacct_charge+0x10e/0x320 [ 101.468628][ T6305] ? __pfx___bpf_trace_contention_begin+0x10/0x10 [ 101.468648][ T6305] __traceiter_contention_begin+0x77/0xb0 [ 101.468681][ T6305] trace_contention_begin+0x114/0x140 [ 101.468704][ T6305] __pv_queued_spin_lock_slowpath+0xf0/0xb60 [ 101.468735][ T6305] ? rcu_qs+0xc4/0x170 [ 101.468763][ T6305] ? __pfx_rcu_qs+0x10/0x10 [ 101.468794][ T6305] ? __pfx___pv_queued_spin_lock_slowpath+0x10/0x10 [ 101.468825][ T6305] ? trace_rcu_utilization+0x47/0x1d0 [ 101.468844][ T6305] ? rcu_note_context_switch+0xdc1/0x1140 [ 101.468873][ T6305] queued_spin_lock_slowpath+0x43/0x50 [ 101.468898][ T6305] do_raw_spin_lock+0x21f/0x290 [ 101.468919][ T6305] ? lock_acquire+0x5f/0x360 [ 101.468947][ T6305] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 101.468974][ T6305] raw_spin_rq_lock_nested+0x2a/0x140 [ 101.469006][ T6305] __schedule+0x32f/0x4d30 [ 101.469034][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.469072][ T6305] ? do_raw_spin_lock+0x121/0x290 [ 101.469093][ T6305] ? schedule+0x165/0x360 [ 101.469118][ T6305] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 101.469140][ T6305] ? __pfx___schedule+0x10/0x10 [ 101.469167][ T6305] ? schedule+0x91/0x360 [ 101.469190][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.469222][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.469252][ T6305] ? lock_release+0x4b/0x3e0 [ 101.469284][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.469318][ T6305] schedule+0x165/0x360 [ 101.469344][ T6305] ptrace_stop+0x575/0x940 [ 101.469376][ T6305] ptrace_notify+0x20f/0x2c0 [ 101.469407][ T6305] ? __pfx_ptrace_notify+0x10/0x10 [ 101.469439][ T6305] ? rcu_is_watching+0x15/0xb0 [ 101.469472][ T6305] syscall_trace_enter+0x60/0x160 [ 101.469503][ T6305] do_syscall_64+0xd3/0x3b0 [ 101.469533][ T6305] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.469553][ T6305] ? clear_bhb_loop+0x60/0xb0 [ 101.469576][ T6305] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 101.469595][ T6305] RIP: 0033:0x7f7d4bd78999 [ 101.469612][ T6305] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 101.469629][ T6305] RSP: 002b:00007ffca308e228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 101.469652][ T6305] RAX: ffffffffffffffda RBX: 00007ffca308e240 RCX: 00007f7d4bd78999 [ 101.469667][ T6305] RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005 [ 101.469679][ T6305] RBP: 0000000000000001 R08: 00007ffca308dfc7 R09: 0000000000000140 [ 101.469692][ T6305] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 101.469703][ T6305] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 executing program [pid 6305] <... bpf resumed>) = 4 [pid 6304] <... sendmsg resumed>) = 28 [pid 6303] write(6, "3", 1 [pid 6305] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6304] exit_group(0 [pid 6303] <... write resumed>) = 1 [pid 6305] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6303] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6306] write(1, "executing program\n", 18 [pid 6304] <... exit_group resumed>) = ? [pid 6307] <... prctl resumed>) = 0 [pid 6306] <... write resumed>) = 18 [pid 6305] <... openat resumed>) = 6 [pid 6303] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6307] setpgid(0, 0 [pid 6305] write(6, "3", 1 [pid 6307] <... setpgid resumed>) = 0 [pid 6306] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6303] exit_group(0 [pid 6307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6305] <... write resumed>) = 1 [pid 6303] <... exit_group resumed>) = ? [pid 6305] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6306] <... bpf resumed>) = 3 [pid 6304] +++ exited with 0 +++ [pid 6306] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6306] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6306] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 6306] write(6, "3", 1) = 1 [pid 6306] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6306] exit_group(0) = ? [pid 6307] <... openat resumed>) = 3 [pid 6305] <... sendmsg resumed>) = 28 executing program [pid 6307] write(3, "1000", 4) = 4 [pid 6307] close(3) = 0 [pid 6307] write(1, "executing program\n", 18) = 18 [pid 6307] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = 3 [pid 6305] exit_group(0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6304, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 6307] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24) = 4 [pid 6307] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6305] <... exit_group resumed>) = ? [pid 6307] <... socket resumed>) = 5 [pid 6307] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6307] <... openat resumed>) = 6 [pid 6307] write(6, "3", 1) = 1 [pid 6307] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6307] exit_group(0) = ? [pid 6305] +++ exited with 0 +++ [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6308 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6305, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 6308 attached [pid 6307] +++ exited with 0 +++ [pid 6303] +++ exited with 0 +++ [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6308] set_robust_list(0x555556b47660, 24 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6307, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6303, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 6308] <... set_robust_list resumed>) = 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 6308] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6309 attached [pid 6308] <... prctl resumed>) = 0 [pid 6309] set_robust_list(0x555556b47660, 24 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6309 [pid 6309] <... set_robust_list resumed>) = 0 [pid 6308] setpgid(0, 0 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6309] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6308] <... setpgid resumed>) = 0 [pid 6309] <... prctl resumed>) = 0 [pid 6309] setpgid(0, 0./strace-static-x86_64: Process 6310 attached ) = 0 [ 101.469724][ T6305] [pid 6308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6310] set_robust_list(0x555556b47660, 24 [pid 6309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6311 attached [pid 6310] <... set_robust_list resumed>) = 0 [pid 6309] <... openat resumed>) = 3 [pid 6308] <... openat resumed>) = 3 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6310 [pid 6306] +++ exited with 0 +++ [pid 6311] set_robust_list(0x555556b47660, 24 [pid 6310] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6309] write(3, "1000", 4 [pid 6311] <... set_robust_list resumed>) = 0 [pid 6310] <... prctl resumed>) = 0 [pid 6309] <... write resumed>) = 4 [pid 6308] write(3, "1000", 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6306, si_uid=0, si_status=0, si_utime=0, si_stime=43 /* 0.43 s */} --- [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6311 [pid 6311] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6310] setpgid(0, 0 [pid 6309] close(3 [pid 6308] <... write resumed>) = 4 [pid 6311] <... prctl resumed>) = 0 [pid 6310] <... setpgid resumed>) = 0 [pid 6309] <... close resumed>) = 0 [pid 6311] setpgid(0, 0 [pid 6310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program [pid 6309] write(1, "executing program\n", 18 [pid 6311] <... setpgid resumed>) = 0 [pid 6310] <... openat resumed>) = 3 [pid 6309] <... write resumed>) = 18 [pid 6308] close(3 [pid 6311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6310] write(3, "1000", 4 [pid 6309] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6311] <... openat resumed>) = 3 [pid 6310] <... write resumed>) = 4 [pid 6309] <... bpf resumed>) = 3 [pid 6308] <... close resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6311] write(3, "1000", 4 [pid 6310] close(3 [pid 6309] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6308] write(1, "executing program\n", 18 [pid 6311] <... write resumed>) = 4 [pid 6310] <... close resumed>) = 0 [pid 6311] close(3 [pid 6310] write(1, "executing program\n", 18 [pid 6311] <... close resumed>) = 0 executing program executing program [pid 6310] <... write resumed>) = 18 ./strace-static-x86_64: Process 6312 attached [pid 6311] write(1, "executing program\n", 18 executing program [pid 6310] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6309] <... bpf resumed>) = 4 [pid 6308] <... write resumed>) = 18 [pid 6312] set_robust_list(0x555556b47660, 24 [pid 6311] <... write resumed>) = 18 [pid 6310] <... bpf resumed>) = 3 [pid 6309] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6312 [pid 6312] <... set_robust_list resumed>) = 0 [pid 6311] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6309] <... socket resumed>) = 5 [pid 6308] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6312] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6311] <... bpf resumed>) = 3 [pid 6310] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6309] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6312] <... prctl resumed>) = 0 [pid 6309] <... openat resumed>) = 6 [pid 6308] <... bpf resumed>) = 3 [pid 6312] setpgid(0, 0 [pid 6311] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6309] write(6, "3", 1 [pid 6310] <... bpf resumed>) = 4 [pid 6308] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6312] <... setpgid resumed>) = 0 [pid 6311] <... bpf resumed>) = 4 [pid 6309] <... write resumed>) = 1 [pid 6308] <... bpf resumed>) = 4 [pid 6312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6311] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6310] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6309] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6308] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6312] <... openat resumed>) = 3 [pid 6311] <... socket resumed>) = 5 [pid 6310] <... socket resumed>) = 5 [pid 6309] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6308] <... socket resumed>) = 5 [pid 6312] write(3, "1000", 4 [pid 6311] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6310] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6309] exit_group(0 [pid 6308] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6312] <... write resumed>) = 4 [pid 6311] <... openat resumed>) = 6 [pid 6310] <... openat resumed>) = 6 [pid 6309] <... exit_group resumed>) = ? [pid 6308] <... openat resumed>) = 6 [pid 6312] close(3 [pid 6311] write(6, "3", 1 [pid 6310] write(6, "3", 1 [pid 6308] write(6, "3", 1) = 1 [pid 6312] <... close resumed>) = 0 [pid 6311] <... write resumed>) = 1 [pid 6310] <... write resumed>) = 1 [pid 6309] +++ exited with 0 +++ [pid 6308] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6312] write(1, "executing program\n", 18executing program [pid 6311] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6310] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6308] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6312] <... write resumed>) = 18 [pid 6311] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6310] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6308] exit_group(0 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6309, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6312] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6311] exit_group(0 [pid 6310] exit_group(0 [pid 6308] <... exit_group resumed>) = ? [pid 6312] <... bpf resumed>) = 3 [pid 6311] <... exit_group resumed>) = ? [pid 6310] <... exit_group resumed>) = ? [pid 6308] +++ exited with 0 +++ [pid 5845] restart_syscall(<... resuming interrupted clone ...> [pid 6312] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 5845] <... restart_syscall resumed>) = 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6308, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6312] <... bpf resumed>) = 4 [pid 6312] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 6312] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6312] <... openat resumed>) = 6 ./strace-static-x86_64: Process 6313 attached [pid 6311] +++ exited with 0 +++ [pid 6312] write(6, "3", 1 [pid 6313] set_robust_list(0x555556b47660, 24 [pid 6312] <... write resumed>) = 1 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6311, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6313 [pid 6313] <... set_robust_list resumed>) = 0 [pid 6312] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6313] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6312] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6310] +++ exited with 0 +++ [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6313] <... prctl resumed>) = 0 [pid 6312] exit_group(0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6310, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6313] setpgid(0, 0 [pid 6312] <... exit_group resumed>) = ? [pid 5849] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6314 attached [pid 6313] <... setpgid resumed>) = 0 [pid 6314] set_robust_list(0x555556b47660, 24 [pid 6313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] <... restart_syscall resumed>) = 0 [pid 5848] <... restart_syscall resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6314 [pid 6314] <... set_robust_list resumed>) = 0 [pid 6313] <... openat resumed>) = 3 [pid 6312] +++ exited with 0 +++ [pid 6313] write(3, "1000", 4 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6312, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6313] <... write resumed>) = 4 [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6313] close(3./strace-static-x86_64: Process 6316 attached ./strace-static-x86_64: Process 6315 attached [pid 6314] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6313] <... close resumed>) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6316 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6315 executing program [pid 6316] set_robust_list(0x555556b47660, 24 [pid 6313] write(1, "executing program\n", 18 [pid 6315] set_robust_list(0x555556b47660, 24 [pid 6314] <... prctl resumed>) = 0 [pid 6316] <... set_robust_list resumed>) = 0 [pid 6315] <... set_robust_list resumed>) = 0 [pid 6313] <... write resumed>) = 18 [pid 5852] <... restart_syscall resumed>) = 0 [pid 6316] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6313] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6316] <... prctl resumed>) = 0 [pid 6315] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6314] setpgid(0, 0 [pid 6316] setpgid(0, 0 [pid 6315] <... prctl resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6316] <... setpgid resumed>) = 0 [pid 6314] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 6317 attached [pid 6314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6317 [pid 6317] set_robust_list(0x555556b47660, 24 [pid 6316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6315] setpgid(0, 0 [pid 6314] <... openat resumed>) = 3 [pid 6317] <... set_robust_list resumed>) = 0 [pid 6316] <... openat resumed>) = 3 [pid 6317] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6316] write(3, "1000", 4 [pid 6315] <... setpgid resumed>) = 0 executing program [pid 6314] write(3, "1000", 4 [pid 6317] <... prctl resumed>) = 0 [pid 6316] <... write resumed>) = 4 [pid 6317] setpgid(0, 0 [pid 6316] close(3 [pid 6315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6314] <... write resumed>) = 4 [pid 6313] <... bpf resumed>) = 3 [pid 6317] <... setpgid resumed>) = 0 [pid 6316] <... close resumed>) = 0 [pid 6314] close(3 [pid 6316] write(1, "executing program\n", 18 [pid 6317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6316] <... write resumed>) = 18 [pid 6314] <... close resumed>) = 0 [pid 6313] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6316] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 executing program [pid 6314] write(1, "executing program\n", 18 [pid 6315] <... openat resumed>) = 3 [pid 6314] <... write resumed>) = 18 [pid 6313] <... bpf resumed>) = 4 [pid 6317] <... openat resumed>) = 3 [pid 6316] <... bpf resumed>) = 3 [pid 6317] write(3, "1000", 4 [pid 6314] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6313] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERICexecuting program executing program [pid 6317] <... write resumed>) = 4 [pid 6316] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6315] write(3, "1000", 4 [pid 6314] <... bpf resumed>) = 3 [pid 6317] close(3 [pid 6315] <... write resumed>) = 4 [pid 6313] <... socket resumed>) = 5 [pid 6316] <... bpf resumed>) = 4 [pid 6317] <... close resumed>) = 0 [pid 6315] close(3 [pid 6314] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6317] write(1, "executing program\n", 18 [pid 6316] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6315] <... close resumed>) = 0 [pid 6317] <... write resumed>) = 18 [pid 6316] <... socket resumed>) = 5 [pid 6315] write(1, "executing program\n", 18 [pid 6314] <... bpf resumed>) = 4 [pid 6317] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6316] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6315] <... write resumed>) = 18 [pid 6314] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6316] <... openat resumed>) = 6 [pid 6315] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6313] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6317] <... bpf resumed>) = 3 [pid 6316] write(6, "3", 1 [pid 6314] <... socket resumed>) = 5 [pid 6313] <... openat resumed>) = 6 [pid 6313] write(6, "3", 1) = 1 [pid 6313] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 ENOBUFS (No buffer space available) [pid 6316] <... write resumed>) = 1 [pid 6315] <... bpf resumed>) = 3 [pid 6314] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6313] exit_group(0 [pid 6317] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6316] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6313] <... exit_group resumed>) = ? [pid 6317] <... bpf resumed>) = 4 [pid 6316] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6315] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6314] <... openat resumed>) = 6 [pid 6317] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6316] exit_group(0 [pid 6315] <... bpf resumed>) = 4 [pid 6317] <... socket resumed>) = 5 [pid 6316] <... exit_group resumed>) = ? [pid 6315] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6314] write(6, "3", 1 [pid 6317] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6314] <... write resumed>) = 1 [pid 6317] <... openat resumed>) = 6 [pid 6316] +++ exited with 0 +++ [pid 6315] <... socket resumed>) = 5 [pid 6314] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6313] +++ exited with 0 +++ [pid 6317] write(6, "3", 1 [pid 6315] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6314] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6317] <... write resumed>) = 1 [pid 6315] <... openat resumed>) = 6 [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6313, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6317] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6315] write(6, "3", 1 [pid 6314] exit_group(0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6316, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6317] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6315] <... write resumed>) = 1 [pid 6314] <... exit_group resumed>) = ? [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6317] exit_group(0 [pid 6315] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6317] <... exit_group resumed>) = ? [pid 6315] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6314] +++ exited with 0 +++ [pid 6315] exit_group(0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6314, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6315] <... exit_group resumed>) = ? [pid 5846] restart_syscall(<... resuming interrupted clone ...> [pid 6317] +++ exited with 0 +++ [pid 5849] <... restart_syscall resumed>) = 0 [pid 6315] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6317, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5846] <... restart_syscall resumed>) = 0 [pid 5852] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6315, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6318 attached [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6319 ./strace-static-x86_64: Process 6319 attached ./strace-static-x86_64: Process 6320 attached [pid 6319] set_robust_list(0x555556b47660, 24 [pid 6318] set_robust_list(0x555556b47660, 24 [pid 6319] <... set_robust_list resumed>) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6318 ./strace-static-x86_64: Process 6321 attached [pid 6321] set_robust_list(0x555556b47660, 24) = 0 [pid 6320] set_robust_list(0x555556b47660, 24 [pid 6319] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6318] <... set_robust_list resumed>) = 0 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6320 ./strace-static-x86_64: Process 6322 attached [pid 6320] <... set_robust_list resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6321 [pid 6321] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6318] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6320] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6322 [pid 6322] set_robust_list(0x555556b47660, 24 [pid 6320] <... prctl resumed>) = 0 [pid 6321] <... prctl resumed>) = 0 [pid 6320] setpgid(0, 0 [pid 6322] <... set_robust_list resumed>) = 0 [pid 6321] setpgid(0, 0 [pid 6320] <... setpgid resumed>) = 0 [pid 6321] <... setpgid resumed>) = 0 [pid 6322] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6319] <... prctl resumed>) = 0 [pid 6318] <... prctl resumed>) = 0 [pid 6322] <... prctl resumed>) = 0 [pid 6320] <... openat resumed>) = 3 [pid 6319] setpgid(0, 0 [pid 6318] setpgid(0, 0 [pid 6322] setpgid(0, 0 [pid 6320] write(3, "1000", 4 [pid 6319] <... setpgid resumed>) = 0 [pid 6318] <... setpgid resumed>) = 0 [pid 6322] <... setpgid resumed>) = 0 [pid 6320] <... write resumed>) = 4 [pid 6319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6321] <... openat resumed>) = 3 [pid 6320] close(3 [pid 6319] <... openat resumed>) = 3 [pid 6318] <... openat resumed>) = 3 [pid 6322] <... openat resumed>) = 3 [pid 6320] <... close resumed>) = 0 executing program [pid 6321] write(3, "1000", 4 [pid 6320] write(1, "executing program\n", 18 [pid 6319] write(3, "1000", 4 [pid 6322] write(3, "1000", 4 [pid 6320] <... write resumed>) = 18 [pid 6319] <... write resumed>) = 4 [pid 6318] write(3, "1000", 4 [pid 6322] <... write resumed>) = 4 [pid 6320] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6319] close(3 [pid 6318] <... write resumed>) = 4 [pid 6322] close(3 [pid 6321] <... write resumed>) = 4 [pid 6319] <... close resumed>) = 0 [pid 6320] <... bpf resumed>) = 3 [pid 6321] close(3) = 0 [pid 6319] write(1, "executing program\n", 18executing program [pid 6318] close(3 [pid 6322] <... close resumed>) = 0 executing program [pid 6320] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6322] write(1, "executing program\n", 18 [pid 6319] <... write resumed>) = 18 [pid 6318] <... close resumed>) = 0 [pid 6322] <... write resumed>) = 18 [pid 6321] write(1, "executing program\n", 18 [pid 6320] <... bpf resumed>) = 4 executing program executing program [pid 6319] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6318] write(1, "executing program\n", 18 [pid 6322] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6321] <... write resumed>) = 18 [pid 6318] <... write resumed>) = 18 [pid 6321] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6318] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6322] <... bpf resumed>) = 3 [pid 6321] <... bpf resumed>) = 3 [pid 6321] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6322] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6321] <... bpf resumed>) = 4 [pid 6320] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6319] <... bpf resumed>) = 3 [pid 6318] <... bpf resumed>) = 3 [pid 6320] <... socket resumed>) = 5 [pid 6318] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6321] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6322] <... bpf resumed>) = 4 [pid 6319] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6318] <... bpf resumed>) = 4 [pid 6320] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6319] <... bpf resumed>) = 4 [pid 6318] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6320] <... openat resumed>) = 6 [pid 6319] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6322] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6320] write(6, "3", 1 [pid 6318] <... socket resumed>) = 5 [pid 6322] <... socket resumed>) = 5 [pid 6321] <... socket resumed>) = 5 [pid 6320] <... write resumed>) = 1 [pid 6319] <... socket resumed>) = 5 [pid 6318] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6322] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6320] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6319] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6318] <... openat resumed>) = 6 [pid 6322] <... openat resumed>) = 6 [pid 6321] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6320] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6319] <... openat resumed>) = 6 [pid 6318] write(6, "3", 1 [pid 6322] write(6, "3", 1 [pid 6320] exit_group(0 [pid 6319] write(6, "3", 1 [pid 6318] <... write resumed>) = 1 [pid 6322] <... write resumed>) = 1 [pid 6321] <... openat resumed>) = 6 [pid 6320] <... exit_group resumed>) = ? [pid 6319] <... write resumed>) = 1 [pid 6318] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6322] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6321] write(6, "3", 1 [pid 6320] +++ exited with 0 +++ [pid 6319] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6322] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6319] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6318] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 5845] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6320, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6321] <... write resumed>) = 1 [pid 6322] exit_group(0 [pid 6319] exit_group(0 [pid 6318] exit_group(0 [pid 6322] <... exit_group resumed>) = ? [pid 6321] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6319] <... exit_group resumed>) = ? [pid 6318] <... exit_group resumed>) = ? [pid 6322] +++ exited with 0 +++ [pid 6321] <... sendmsg resumed>) = 28 [pid 6321] exit_group(0 [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6322, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6321] <... exit_group resumed>) = ? [pid 6319] +++ exited with 0 +++ [pid 5848] restart_syscall(<... resuming interrupted clone ...> [pid 6318] +++ exited with 0 +++ [pid 5848] <... restart_syscall resumed>) = 0 [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6319, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6318, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6323 attached ./strace-static-x86_64: Process 6324 attached [pid 6323] set_robust_list(0x555556b47660, 24 [pid 6321] +++ exited with 0 +++ [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6323 [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6324] set_robust_list(0x555556b47660, 24 [pid 6323] <... set_robust_list resumed>) = 0 [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6324 [pid 6324] <... set_robust_list resumed>) = 0 [pid 5846] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6321, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6323] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 6325 attached [pid 6324] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6325] set_robust_list(0x555556b47660, 24) = 0 [pid 6324] <... prctl resumed>) = 0 [pid 6323] <... prctl resumed>) = 0 [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6325 [pid 6325] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6324] setpgid(0, 0 [pid 6323] setpgid(0, 0 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6325] <... prctl resumed>) = 0 [pid 6324] <... setpgid resumed>) = 0 [pid 6323] <... setpgid resumed>) = 0 [pid 6325] setpgid(0, 0 [pid 6324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6325] <... setpgid resumed>) = 0 [pid 6325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6324] <... openat resumed>) = 3 [pid 6323] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6327 attached ./strace-static-x86_64: Process 6326 attached [pid 6325] <... openat resumed>) = 3 [pid 6324] write(3, "1000", 4 [pid 6323] write(3, "1000", 4 [pid 6325] write(3, "1000", 4 [pid 6324] <... write resumed>) = 4 [pid 6323] <... write resumed>) = 4 [pid 5845] <... clone resumed>, child_tidptr=0x555556b47650) = 6327 [pid 6325] <... write resumed>) = 4 [pid 6324] close(3 [pid 6323] close(3 [pid 6325] close(3) = 0 [pid 6324] <... close resumed>) = 0 [pid 6323] <... close resumed>) = 0 executing program [pid 6325] write(1, "executing program\n", 18 [pid 6324] write(1, "executing program\n", 18executing program executing program [pid 6323] write(1, "executing program\n", 18 [pid 6325] <... write resumed>) = 18 [pid 6324] <... write resumed>) = 18 [pid 6323] <... write resumed>) = 18 [pid 6325] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6327] set_robust_list(0x555556b47660, 24 [pid 6326] set_robust_list(0x555556b47660, 24 [pid 6324] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6323] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 5846] <... clone resumed>, child_tidptr=0x555556b47650) = 6326 [pid 6327] <... set_robust_list resumed>) = 0 [pid 6326] <... set_robust_list resumed>) = 0 [pid 6327] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6326] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6325] <... bpf resumed>) = 3 [pid 6327] <... prctl resumed>) = 0 [pid 6326] <... prctl resumed>) = 0 [pid 6327] setpgid(0, 0 [pid 6326] setpgid(0, 0 [pid 6324] <... bpf resumed>) = 3 [pid 6327] <... setpgid resumed>) = 0 [pid 6326] <... setpgid resumed>) = 0 [pid 6327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6325] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6324] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6323] <... bpf resumed>) = 3 [pid 6326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6325] <... bpf resumed>) = 4 [pid 6327] <... openat resumed>) = 3 [pid 6325] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6324] <... bpf resumed>) = 4 [pid 6323] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6327] write(3, "1000", 4 [pid 6326] <... openat resumed>) = 3 [pid 6325] <... socket resumed>) = 5 [pid 6325] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6324] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6323] <... bpf resumed>) = 4 [pid 6327] <... write resumed>) = 4 [pid 6326] write(3, "1000", 4 [pid 6325] <... openat resumed>) = 6 [pid 6324] <... socket resumed>) = 5 [pid 6325] write(6, "3", 1 [pid 6323] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6327] close(3 [pid 6326] <... write resumed>) = 4 [pid 6325] <... write resumed>) = 1 [pid 6324] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6323] <... socket resumed>) = 5 [pid 6327] <... close resumed>) = 0 [pid 6325] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6323] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6327] write(1, "executing program\n", 18 [pid 6326] close(3 [pid 6325] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6324] <... openat resumed>) = 6 [pid 6323] <... openat resumed>) = 6 [pid 6325] exit_group(0executing program [pid 6323] write(6, "3", 1 [pid 6327] <... write resumed>) = 18 [pid 6325] <... exit_group resumed>) = ? [pid 6323] <... write resumed>) = 1 [pid 6327] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6326] <... close resumed>) = 0 [pid 6324] write(6, "3", 1 [pid 6323] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0executing program [pid 6326] write(1, "executing program\n", 18 [pid 6325] +++ exited with 0 +++ [pid 6324] <... write resumed>) = 1 [pid 6323] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6326] <... write resumed>) = 18 [pid 6324] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 6323] exit_group(0 [pid 5849] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6325, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 6326] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6324] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6323] <... exit_group resumed>) = ? [pid 5849] restart_syscall(<... resuming interrupted clone ...> [pid 6326] <... bpf resumed>) = 3 [pid 6324] exit_group(0 [pid 6327] <... bpf resumed>) = 3 [pid 5849] <... restart_syscall resumed>) = 0 [pid 6324] <... exit_group resumed>) = ? [pid 6327] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6326] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6323] +++ exited with 0 +++ [pid 5849] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6327] <... bpf resumed>) = 4 [pid 6324] +++ exited with 0 +++ [pid 5852] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6323, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5852] restart_syscall(<... resuming interrupted clone ...> [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6324, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 6328 attached [pid 5852] <... restart_syscall resumed>) = 0 [pid 6328] set_robust_list(0x555556b47660, 24 [pid 6326] <... bpf resumed>) = 4 [pid 6328] <... set_robust_list resumed>) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6328] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6327] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6326] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5849] <... clone resumed>, child_tidptr=0x555556b47650) = 6328 [pid 6327] <... socket resumed>) = 5 [pid 6326] <... socket resumed>) = 5 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6329 attached [pid 6328] <... prctl resumed>) = 0 [pid 6329] set_robust_list(0x555556b47660, 24 [pid 6328] setpgid(0, 0 [pid 6327] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6326] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 5848] <... clone resumed>, child_tidptr=0x555556b47650) = 6329 ./strace-static-x86_64: Process 6330 attached [pid 6329] <... set_robust_list resumed>) = 0 [pid 6328] <... setpgid resumed>) = 0 [pid 6329] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6329] <... prctl resumed>) = 0 [pid 6328] <... openat resumed>) = 3 [pid 6329] setpgid(0, 0 [pid 6328] write(3, "1000", 4 [pid 6327] <... openat resumed>) = 6 [pid 6326] <... openat resumed>) = 6 [pid 6330] set_robust_list(0x555556b47660, 24 [pid 5852] <... clone resumed>, child_tidptr=0x555556b47650) = 6330 [pid 6329] <... setpgid resumed>) = 0 [pid 6328] <... write resumed>) = 4 [pid 6327] write(6, "3", 1 [pid 6329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6328] close(3 [pid 6330] <... set_robust_list resumed>) = 0 [pid 6329] <... openat resumed>) = 3 [pid 6328] <... close resumed>) = 0 [pid 6327] <... write resumed>) = 1 [pid 6326] write(6, "3", 1 [pid 6330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6329] write(3, "1000", 4 executing program [pid 6328] write(1, "executing program\n", 18 [pid 6330] setpgid(0, 0 [pid 6329] <... write resumed>) = 4 [pid 6328] <... write resumed>) = 18 [pid 6330] <... setpgid resumed>) = 0 [pid 6329] close(3 [pid 6328] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6329] <... close resumed>) = 0 [pid 6327] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0executing program [pid 6326] <... write resumed>) = 1 [pid 6330] <... openat resumed>) = 3 [pid 6329] write(1, "executing program\n", 18 [pid 6330] write(3, "1000", 4 [pid 6329] <... write resumed>) = 18 [pid 6328] <... bpf resumed>) = 3 [pid 6330] <... write resumed>) = 4 [pid 6326] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x05\x00\x04\x00\x01\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0executing program [pid 6330] close(3 [pid 6329] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6326] <... sendmsg resumed>) = -1 ENOBUFS (No buffer space available) [pid 6330] <... close resumed>) = 0 [pid 6329] <... bpf resumed>) = 3 [pid 6328] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6326] exit_group(0 [pid 6330] write(1, "executing program\n", 18) = 18 [pid 6328] <... bpf resumed>) = 4 [pid 6326] <... exit_group resumed>) = ? [pid 6330] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, insn_cnt=11, insns=0x2000000005c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_SOCK_CREATE, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148 [pid 6329] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24 [pid 6328] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6327] <... sendmsg resumed>) = -1 EFAULT (Bad address) [pid 6329] <... bpf resumed>) = 4 [pid 6329] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 6328] <... socket resumed>) = 5 [pid 6327] exit_group(0 [pid 6330] <... bpf resumed>) = 3 [pid 6329] <... socket resumed>) = 5 [pid 6328] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 6326] +++ exited with 0 +++ [pid 6330] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="contention_begin", prog_fd=3}}, 24